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    • 专利摘要:
    The present invention relates to a synergistic and stable nitrogen fertilizer and a production method thereof. The fertilizer components include nitrogen fertilizer, intermediate and trace elements, a nitrogen regulator synergist (urease inhibitors and/or nitrification inhibitors), and a carbon source synergist. The nitrogen fertilizer is urea, with the middle and trace elements comprising calcium, magnesium, sulphur, boron, silicon, iron and zinc. In parts by weight, the weight part ratio of nitrogen fertilizer, intermediate and trace elements, nitrogen regulator synergist and carbon synergist is 1:0.05-0.1:0.001-0.1:0.1-0.3 Add nitrogen regulator synergists in the fertilizer to adjust the release time and rate of the nitrogen fertilizer. The fertilizer effect is slow and stable, to meet the different nutrient needs of different stages of plant growth, to solve the conflict between plant needs and soil fertilizer, and to reduce greenhouse gas emissions and nitrogen leaching loss. It is a new type of synergistic and stable nitrogen fertilizer.
    公开号:BE1028364B1
    申请号:E20215440
    申请日:2021-06-02
    公开日:2022-01-04
    发明作者:Lili Zhang；Zhijie Wu；Zhanbo Wei
    申请人:Chinese Academy Of Sciences Inst Of Applied Ecology；
    IPC主号:
    专利说明:

    ; BE2021/5440 Synergistic and stable nitrogen fertilizer and manufacturing process therefor
    TECHNICAL FIELD The present invention relates to the field of soil and chemical fertilizer, particularly a stable fertilizer that can provide not only a certain amount of nitrogen source to soil but also the loss and waste of nitrogen caused by insufficient carbon source , thus the nitrogen source in the form of microbial biomass nitrogen and solid ammonium will be fixed in the soil to promote plant growth and meet the nutrient needs of plants during each growth stage. At the same time, it can also reduce greenhouse gas emissions and protect the environment.
    BACKGROUND ART Nitrogen is one of the essential nutrient elements for the growth of crops. The application of nitrogen fertilizer plays an important role in improving the yield and quality of crops. The amount of nitrogen fertilizers accounts for about 60% of the total amount of chemical fertilizers. However, the nitrogen fertilizer utilization rate in China is gradually declining, and the post-season nitrogen fertilizer utilization rate is only 30% to 35%, and the remaining nitrogen fertilizer is lost in various forms. By 2012, the utilization rate of nitrogen fertilizers in the rice fields in China was only 30% to 40%, and according to the 2015 forecast of the United Nations Food and Agriculture Organization (FAO), the global demand for nitrogen fertilizers in 2021 will be nearly 1.19 times Reach 10° tons, which is an average annual increase of 1.4%, in the current situation, the demand for nitrogen fertilizer is only increasing, and the utilization rate of nitrogen fertilizer is low. From the point of view of economics or environmental protection, improving the utilization rate of nitrogen fertilizers and reducing nitrogen loss is a problem that needs to be solved urgently. The production and application of nitrogen fertilizers is an effective strategy to solve this problem, given the small Utilization rate of nitrogen fertilizers, severe air pollution caused by the release of NO, and groundwater pollution caused by nitrogen leaching, some progress is being made in the development and manufacture of a stable fertilizer. A large number of scientific studies indicate that the control of the conversion of nitrogen in the Soil through biological and chemical means has become one of the effective ways to improve the utilization rate of nitrogen fertilizers. The biochemical inhibitors are added to fertilizers to slow down urea hydrolysis and ammonium nitrification, increase the content of adsorbed ammonium in the soil, inhibit ammonium oxidation and the
    © BE2021/5440 To reduce ammonia volatilization and greenhouse gas emissions, the production of stable fertilizers has the advantages of low cost, simple process flow, obvious effect of controlling nitrogen conversion and easy large-scale production, and it is widely used in China and develops
    In the arable ecosystem, the soil nitrogen cycle and the carbon cycle are inextricably linked, and the two influence and limit each other. In the agricultural ecosystem, the dynamics of soil carbon and nitrogen is a complex biogeochemical process involving dis production, decomposition, nitrification, denitrification and fermentation of organic matter.
    The ratio of
    Soil carbon to nitrogen can reflect the coupling relationship between soil carbon and nitrogen and plays an important role in assessing soil quality levels.
    In agricultural production, the carbon input should be increased and the nitrogen input should be reduced, which can maintain the soil carbon and nitrogen balance and the sustainable use of the soil. When the soil C/N ratio is low, there is enough nitrogen to to be consumed by microorganisms, and the nitrogen for the assimilation of microorganisms should consume more carbon, and microorganisms need more carbon to maintain activity when nitrogen is sufficient.
    Because of this, when applying compound fertilizers, a certain amount of carbon is required to reduce nitrogen loss, improve the nitrogen utilization rate, and at the same time improve the soil's ability to hold nitrogen. The intensity of soil denitrification correlates with the Mineralization rate of soil organic carbon, and the denitrification rate correlates with the total soil carbon and has a higher correlation with the content of organic carbon or mineralizable carbon. The input of organic carbon promotes the accumulation of nitrogen in the soil.
    Positioning experiments for a long time indicate that appropriate fertilization can maintain or increase organic carbon and total nitrogen levels in farmland soil.
    In paddy fields, the change trends in soil organic matter content and total nitrogen content are similar, and the two have a relationship of promoting and restricting each other, which has a good coupling relationship, y-polyglutamic acid (y-PGA) has excellent hydrophilicity and water retention capacity.
    When flooding in the soil, a film is formed on the surface of the root hairs of plants, which not only protects the root hairs, but also is the best transport platform for the close contact of nutrients, water with the root hairs in the soil, resulting in loosening, storage, transportation and can effectively improve absorption of the fertilizer; prevents the precipitation of sulphate, phosphate, oxalate and metal elements, so that the plants have phosphorus, calcium, magnesium and trace elements in the
    can absorb soil more effectively; and promotes plant root development and disease resistance. There are currently many synthetic methods for the γ-polyglutamic acid, including traditional peptide synthesis, dimer condensation, natto extraction, and microbial fermentation. At present, the polyurea-urea is used in the cultivation of fruits and vegetables, which brings good economic and environmental benefits. For rice, wheat, corn, sorghum and other crops, providing a certain ratio of ammonium to nitrate in the soil can play a good role in the Play promotion of nitrogen absorption, and the application of stable nitrogen fertilizers containing the nitrification inhibitors and urease inhibitors can slow down the conversion process of NH,"-N to NO:N to maintain a high level of NH4*-N in the soil, due to the serious loss of soil nitrogen in arable land, the low utilization rate of nitrogen fertilizers, different demand of different crops for nitrogen, phosphorus and potassium, the development of stable fertilizers urgently requires a new direction; and it is a new direction, with nitrogen fertilizers, intermediate and trace elements, nitrogen regulator synergists and coals toffsynergists in combination to produce a synergistic and stable fertilizer, which is of great importance for improving soil fertility, storing soil nitrogen pools and improving emirate yields,
    SUMMARY OF THE PRESENT INVENTION The present invention aims to provide a synergistic and stable nitrogen fertilizer and a manufacturing method thereof.
    To achieve the above goal, the present invention uses the following technical solution: a synergistic and stable nitrogen fertilizer, the fertilizer components being urea, intermediate and trace elements (calcium, magnesium, sulfur, boron, silicon, iron, zinc), a nitrogen regulator synergist and contain a carbon source synergy (preferably amino acid). In parts by weight, the ratio of urea, middle and trace elements, nitrogen regulator synergists and carbon source (amino acid) is 1:0.3-0.5:0.8-1:0.05-0.1:0.001-0.1:0 .1-0.3. Dissolving the inhibitor in the organic solvent according to the above dosage and uniformly mechanically mixing by a mixing pump, wherein the above-dosed carbon source (γ-polyglutamic acid) is dissolved in the aqueous solution and uniformly mechanically mixed by the mixing pump, and the above two solutions and the phosphorus and potassium fertilizers are added in the urea urine, and the granulation by the ordinary granulation device for urea production
    BE2021/5440 is carried out in order to obtain a synergistic and stable nitrogen fertilizer in which the particle size from 0.85 to 2.8 mm accounts for more than 93%.
    Adding a calculated amount of carbon source γ-polyglutamic acid, after adding in the soil, the C/N ratio of the soil reaches 25: 1, to reduce the loss of nitrogen caused by the untimely supply of carbon sources and the carbon and nitrogen at the same time in the body of microorganisms, and the nitrogen is released slowly by being decomposed by microorganisms and held by clay minerals, thereby meeting the need for compound fertilizers at various stages of plant growth. Polyglutamic acid is a water-soluble, biodegradable, non-toxic biopolymer produced by microbial fermentation. This is a sticky substance and was first discovered in "natto" - fermented beans. This is a special anionic natural polymer that is formed by the condensation of D- and L-type glutamic acid molecules through the amide bond between the a-amino group and the v-carboxylic acid group formed, where inr molecular weight is between 50000 and 1-million daltons, and where the structural formula is as represented by formula 1: AO ed formula 1 Structural formula of polyglutamic acid The polyglutamic acid is a new generation of plant nutritional enhancer, As a polymer compound, it can act as an ion pump act and enhance the absorption of nitrogen, phosphorus, potassium and trace elements, it has biocompatibility and complexing power for positive and negative charges, and is able to play the role of pump, truck and fortifier, which effectively bind nutrients, to increase the effective nutrient concentration n to reduce fertilizer loss, enrich nutrients, improve fertilizer utilization rate, and promote crop root development and protein synthesis to achieve the effect of increasing yields and improving quality. At the same time, the polyglutamic acid is a safe, environmentally friendly and hormone-free product, which can be broken down into the monomeric amino acid glutamic acid, which is absorbed and utilized by crops, which is safe, efficient and environmentally friendly. The invention patent has the following advantages:
    1. After applying a synergistic and stable nitrogen fertilizer, due to the addition of nitrification inhibitors, the compound fertilizer remains in the soil for a long time in the form of ammonium nitrogen to prevent the occurrence of high levels of nitrate nitrogen
    ° avoiding BE2021/5440 and reducing nitrogen loss caused by nitrogen leaching and denitrification effect, which increases the utilization rate of nitrogen fertilizers, promotes the existence of nitrogen fertilizers in the form of ammonium thiocyanate, shortens the time for supplying crops with nitrate nitrogen and nitrite nitrogen, reduces toxicity of seedling stage crops and improves ability to resist pests and diseases,
    2. The application of synergistic and stable nitrogen fertilizer can meet the need of the carbon source for crop growth, the type of carbon source added is γ-polyalutamic acid, and while supplementing the carbon source, γ-polyglutamic acid also has the function of activating phosphoric acid, to meet the need of cultivated plants for phosphorus,
    3. After applying a synergistic and stable nitrogen fertilizer, part of the fertilizer nitrogen can be stored in the soil, because it has both a carbon source and sine nitrogen source, this is done on the one hand by the fixation of microorganisms, and on the other hand by the fixation of clay minerals, the fixation of Microorganisms is mainly reflected in the fact that when the carbon source is sufficient, the microorganisms simultaneously absorb and use the carbon source and nitrogen flow to achieve their own growth and development, and solidify in the form of part of the organic nitrogen in the soil, and when crops need it, it is slowly released. The combination of the two enriches the nitrogen pool in the soil and increases nitrogen fixation. This improves the properties of the nitrogen pool in the soil. On the other hand, due to its special molecular structure, the polyglutamic acid has a strong moisture-wicking ability to improve the soil aggregate structure, loosen the soil and improve the soil's ability to maintain water and fertilizer, and the polyglutamic acid has also the ability to adjust the pH of the soil and reduce the content of heavy metals in the soil, which achieves a strong adjusting effect on the nutrient supply of the soil, 4, After applying a synergistic and stable nitrogen fertilizer, it can not only fix the soil nitrogen , increase the utilization rate of nitrogen fertilizers, reduce greenhouse gas emissions and reduce environmental pollution, but also help activate the original phosphorus and potassium in the soil, especially the synergistic effect for potassium is obvious to increase the functions to increase rooting and strengthen seedlings, resist disease and stagnation, and increase yield and harvest.
    5. After applying a synergistic and stable nitrogen fertilizer, since the fertilizer contains components, it has good stability, economy, and specific adsorption and retention properties for nitrogen and other nutrients. It can obviously adsorb inorganic salt ions such as NH4+, therefore the nitrogen loss can be reduced
    ° BE2021/5440 in the soil is reduced, the utilization efficiency of organic fertilizer is effectively improved, and the fertility of the soil is gradually improved. At the same time, after application in the soil, due to the porous structure and large specific surface area, the soil's bulk density, water content, porosity, electrical conductivity, cation exchange capacity and nutrient status of the soil are directly or indirectly affected, thereby affecting the soil microenvironment will. 8, After applying the synergistic and stable compound fertilizer, the nitrogen regulator synergist (urease inhibitor, nitrification inhibitor) is combined with the v-polyglutamic acid to obtain a compound synergist of fertilizers, which has the coordinating effect of the urease inhibitor and nitrification inhibitor to inhibit hydrolysis and conversion of urea nitrogen, as well as the synergistic effect of polyglutamic acid for the nutrient uptake of crops and the improvement of water retention and fertilizer retention fully developed, to effectively inhibit the hydrolysis of urea and the conversion to the nitrate nitrogen, extend the effective duration of the urea nitrogen fertilizer, the absorption - Improve nitrogen utilization efficiency by crops, increase absorption amount of nitrogen by crops, increase fertilizer utilization rate, content of nutrients such as protein, amino acids and fat in agricultural products, while activating the medium and trace elements in the soil required by plants, and increasing the effective accumulation of trace elements in the soil required by crops to promote the absorption of other nutrients by the crops.
    7. The protective chelation process and multi-stage compression process are combined for fertilizer production, yeast autolysis and complex enzymatic hydrolysis are combined together to produce an amino acid solution through a multi-stage compression process accompanied with biochemical reaction, and this step includes the formation of low molecular weight amino acids, then the trace element solution is mixed with the prepared amino acid solution, the chelating reaction occurs in the chelating process, so that the amino acids and the trace elements are replaced by the groups on the binary C atom to produce an amino acid chelated fertilizer. The technological process used to manufacture the fertilizer is: enzyme mother sludge — press filtration — autolysis — enzyme hydrolyss — filtration — dosing — chelation — cooling —— filtration > compounding > product packaging. This process has mild reaction conditions and is easy to operate.
    DETAILED DESCRIPTION in connection with exemplary embodiments, the present invention is explained in more detail below,
    / BE2021/5440 Example 1 The components of the synergistic and stable nitrogen fertilizer include urea, magnesium, urease inhibitor and polyglutamic acid. Based on 100 parts by weight of urea urine, 50 parts of superphosphate, 100 parts of potassium sulfate, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol at a volume fraction of 37% capable of dissolving ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added. Preparation Method: Based on 100 parts (Kg) of urea urine {molten urea), 5 parts of ammonium thiosulfate are dissolved in 300-500 ml (here 400 ml} of methanol at a volume concentration of 37% (as the carrier of the slow-release agent) and thoroughly mixed evenly ; 20 parts of γ-polyglutamic acid is dissolved in the water and mixed uniformly; the two and 8 parts of magnesium are added in the urea urine, and with the apparatus and method for producing ordinary granulated urea, the granulation becomes a synergistic and stable nitrogen fertilizer with a particle size 0.85- 2.8mm290% and a nitrogen content of 24%.
    Embodiment 2 The components of the synergistic and stable nitrogen fertilizer include urea, sulfur, urease inhibitor, nitrification inhibitor and γ-polyglutamic acid.
    Based on 100 parts by weight (100 kg} urea urine, 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazole phosphate, 300-500 ml {here 400 ml} methanol with a volume concentration of 37%, which is the Ammonium thiosulfate and the 3,4-dimethylpyrazole phosphate can dissolve, and 20 parts of γ-polyglutamic acid are added.Preparation method: Based on 100 parts of urea urine (melted urea), 2.5 parts of ammonium thiosulfate and 2.5 parts of 3,4-dimethylpyrazole phosphate in 300 -500 ml (here 400 ml) of methanol with a volume concentration of 37% (as the carrier of the slow-release agent) dissolved and thoroughly mixed evenly; 20 parts of y-polyglutamic acid are dissolved in the water and mixed evenly; the flow rate is calculated by a metering pump , the two mixed solutions and 8 parts of sulfur are added in the urea urine, and with the apparatus and method for producing ordinary granulated urea a synergistic and stable nitrogen fertilizer with a Parijkelgröfe 0.85-2.8mm290% and a nitrogen content of 24% produced, Example 3 The components of the synergistic and stable nitrogen fertilizer include urea, the nitrification inhibitor, zinc and γ-polyglutamic acid.
    Based on 100 parts (100 kg) of urea urine, 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate, methanol! with a volume concentration of 37% capable of dissolving the 3,4-dimethylpyrazole phosphate and 20 parts of γ-polyglutamic acid are added.
    Method of preparation: Based on 100 parts of urea urine (melted urea), 5 parts of 3,4-dimethylpyrazole phosphate are dissolved in 300-500 ml (here 400 ml) of methanol at a volume concentration of 37% (as the carrier of the slow-release agent) and thoroughly mixed evenly ; 20 parts of polyglutamic acid are dissolved in the water and mixed evenly; the flow rate is calculated by a metering pump, the two mixed solutions and 7 parts of zinc, 50 parts of double superphosphate and 100 parts of potassium chloride are added in the urea urine, and with the apparatus and method for producing ordinary granular urea, a synergistic and stable nitrogen fertilizer with a particle size of 0.85-2.8mm290% and a nitrogen content of 24% is produced by granulation wheezes The application time was a single application of basic fertilizer before sowing (maize and wheat) and transplanting (rice). The control was ordinary urea, the nitrogen fertilizer application rate in the control corn field was equivalent to 12 kg/mu of pure nitrogen, the application rate in the paddy field was equivalent to 15 kg/mu of pure nitrogen, and the application rate in the wheat field was equivalent to 5 kg/mu of pure nitrogen, the nitrogen application rate in the application example was 80% of the control.
    The fertilizer application time was May 1, the fertilizer application time for the welzen field was April 15, and the application time for the paddy field was May 20, and the field test results obtained were as follows: Unit: mu PS Ordinary urea “More synergistic and stable 0 Nitrogen fertilizer application (nitrogen content 46.3%) (nitrogen content 24%} of pure yield Kg of pure Kg of yield nitrogen Kg nitrogen Kg (%) rice 15 953 15 952 5.2
    ° BE2021/5440 Application Comparison Example 1 This Application Comparison Example is a field application comparison of a fertilizer without the addition of a carbonaceous synergist and the synergistic and stable nitrogen fertilizer. The application time was a one-time application of basic fertilizer before sowing (corn and wheat) and transplanting (rice), the nitrogen fertilizer application rate in the corn field was equivalent to 12 kg/mu of pure nitrogen, the application rate in the paddy field was equivalent to 15 kg/mu of pure nitrogen and the application rate in the wheat field was 5 kg/mu of pure nitrogen, the fertilizer application time for the corn field was May 1, the fertilizer application time for the wheat field was April 15, and the application time for the paddy field was May 20.
    The synergistic and stable nitrogen fertilizer produced in Example 1 was compared in a field comparison test with products without carbon synergists (ie without polyglutamic acid). The crops were corn, rice and whey. The components of Example 1 include urea, magnesium, the urease inhibitor ammonium thiosulfate and the γ-polyglutamic acid. Based on 100 parts {100 kg} of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol at a volume fraction of 37% capable of solvating the ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added. The components of the comparative example of embodiment 1 include the urea, the magnesium, the urease inhibitor ammonium thiosulfate. The amount added is based on 100 parts urea urine, adding 8 parts magnesium and 5 parts ammonium thiosulfate.
    The synergistic and stable nitrogen fertilizer prepared in Example 2 was compared to products without carbon synergists (i.e., without polyglutamic acid) in a field trial. The crops were corn, rice and corn; the components of embodiment 2 include urea, sulfur, urease inhibitor, nitrification inhibitor and γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazole phosphate, methanol with a volume concentration of 37%, the ammonium thiosulfate and the 3,4-dimethylpyrazole phosphate can dissolve, and 20 parts of γ-polyglutamic acid is added. The comparative example of working example 2 comprises the urea, the urinary inhibitor and the nitrification inhibitor. The amount added is based on 100 parts urea urine adding 8 parts sulfur, 5 parts ammonium thiosulfate, 5 parts 3,4-dimethylpyrazole phosphate.
    The synergistic and stable nitrogen fertilizer prepared in Example 3 was compared in a field trial to products without carbon synergists (i.e., without polyglutamic acid). The crops were corn, rice, and wheat
    nitrification inhibitor and dis y-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate, methanol having a volume concentration of 37% capable of dissolving the 3,4-dimethylpyrazole phosphate, and 20 parts γ-polyglutamic acid Components of the comparative example of the working example 3 include the urea, the zinc and the nitrification inhibitor.
    The amount added is based on 100 parts urea urine adding 7 parts zinc and 5 parts 3,4-dimethylpyrazole phosphate.
    The test results show that in the field crops corn, rice and wheat, after applying the synergistic and stable nitrogen fertilizer described in this patent and the corresponding fertilizer product without carbon synergists, the yield of the crops decreases significantly. The mechanism is that after adding the carbon source helps to fix the nitrogen more in the soil, and in the later stage of crop growth, the nitrogen is released slowly for the growth needs, which meets the need for the nitrogen nutrients in the later stage of growth and the stage of reproductive growth, field comparison experiment of synergistic and stable nitrogen fertilizers and fertilizer products without carbon synergists / / | Comparative After the | Comparable | After | Comparable | After | __ it Le Lt à us | example of example 1 example of example 2 example of example 3 | N. . | Execution manufactured | execution | manufactured | execution | manufactured |; N'LE N | example 3 r fertilizer example 1 r fertilizer example 2 r fertilizer | Telephone 947 920 989 941 984 | 922 kg/mu | 953 924 992 935 971 | 930 kg/mu | Wheatert | 354 322 399 340 365 | 342
    Application Comparative Example 2 A field comparative test when the added amount of carbonaceous materials is higher than the upper limit of the protection range.
    The application time was a single application of basic fertilizer before sowing (maize and wheat) and transplanting (rice). The nitrogen fertilizer application rate in the corn field corresponded to 12 Kg/mu pure nitrogen, the application rate in the paddy field corresponded to 15 Kg/mu pure nitrogen, and the application rate in the wheat field corresponded to 5 Kg/mu pure nitrogen, dis
    ' BE2021/5440 Manure application time for the corn field was May 1st, manure application time for the wheat field was April 15th, and manure application time for the paddy field was May 20th. Comparison of the field application effect of the product, wherein the added weight ratio among the synergistic and stable nitrogen fertilizer prepared according to Embodiment 1, the nitrogen fertilizer, the magnesium, the nitrogen regulator synergist and the carbon synergist is 1:0.5:1:0.08:0.05 : 1, the components of embodiment 1 include the urea, the magnesium, the urease inhibitor ammonium thiosulfate and the γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol of 37% by volume capable of containing ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added the urea, the magnesium and the urease inhibitor ammonium thiosulfate, The amount added is based on 100 parts urea urine, adding 8 parts magnesium, 5 parts ammonium thiosulfate and 100 parts γ-polyglutamic acid, Comparison of the field application effect of the product, the ratio of the added weight between the synergistic and stable nitrogen fertilizer prepared according to Embodiment 2, the nitrogen fertilizer, the sulfur, the nitrogen synergist and the carbon synergist is 1:0.5:1:0.08:0.05:1, 0.1 part biochemical inhibitor comprises 0.05 part urease inhibitor and 0.05 part nitrification inhibitor Example 2 includes the urea, the sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the carbon source γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazoiphosphate, methanol with a volume concentration of 37%, the ammonium thiosulphate and the 3,4-dimethylpyrazoiphosphate can dissolve, and 20 parts of γ-polyglutamic acid are added. The components of the comparative example of exemplary embodiment 2 include urea, sulfur, the urease inhibitor ammonium thiosulfate, the nirification inhibitor 3,4-dimethylpyrazole phosphate and γ-polyglutamic acid. The amount added is based on 100 parts urea urine adding 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazole phosphate and 100 parts γ-polyglutamic acid.
    Comparison of the field application effect of the product, wherein the ratio of the added weight between the synergistic and stable nitrogen fertilizer prepared according to embodiment 3, the nitrogen fertilizer, the zinc, the nitrogen regulator synergist and the carbon synergist is 1:0.5:1:0.07:0.05 : 1, the components of embodiment 3 include the urea, the zinc, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the γ-polyglutamic acid. Based on 100 parts (100 Kg} urea urine, 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate, methanol with a
    Volume concentration of 37% capable of dissolving the 3,4-dimethylpyrazole phosphate and 20 parts of γ-polyglutamic acid were added. the components of the comparative example of working example 3 include the urea, the zinc, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the γ-polyglulaminic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate and 100 parts γ-polyglutamic acid.
    At this time, the amount of carbon source added exceeds the safe range.
    It was found that due to the increase in carbon content, the demand for nitrogen by microorganisms also increased sharply, which caused the competition of nitrogen from microorganisms in the soil, which in turn affected the absorption and utilization of nitrogen by crops and the waste of the soil Yields of crops caused, field comparison trial of synergistic and stable nitrogen fertilizers and fertilizer products in which the added amount of carbon synergist exceeds the upper limit of protection EE [ comparison | After | comparison case | After the | comparison he | After the | example application c | Example 2 | Example 1 game uiturpfianze | example 3 game manufactured | Execution | manufactured | execution | manufactured | Execution | r fertilizer for example 1 r fertilizer | example 2 r fertilizer example maize yield | | Travel Yield | | Wheat Yield | | Application Comparative Example 3 A field comparative test when the added amount of carbonaceous synergist is lower than the protection range.
    The application time was a single application of basic fertilizer before sowing (maize and wheat) and transplanting (rice). The nitrogen fertilizer application rate in the corn field was equivalent to 12 kg/mu of pure nitrogen, the application rate in the paddy field was equivalent to 15 kg/mu of pure nitrogen, and the application rate in the welzen field was equivalent to 5 kg/mu of pure nitrogen. The fertilizer application time for the corn field was May 1, the fertilizer application time for the wheat field was April 15, and the application time for the paddy field was May 20.
    A field comparison test was conducted for the synergistic and stable nitrogen fertilizer prepared in Example 1 and a product in which the nitrogen fertilizer, the magnesium, the nitrogen regulator synergist and the carbon synergist with a weight ratio of 1:0.5:1:0.08:0.05 :0.01 were added, the crop plants being corn, rice and wheat. The components of example 1 comprise urea, superphosphate, potassium sulfate, magnesium, the ursase inhibitor ammonium thiosulfate and γ-polyalutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol having a 37% volume fraction capable of dissolving the ammonium thiosulfate, and 20 parts of γ-polyglulaminic acid are added. The components of the comparative example of working example 1 comprise the urea, the magnesium, the urease inhibitor ammonium thiosulfate and the γ-polyglulamine acid. The amount given is based on 100 parts urea urine, with 8 parts magnesium, 5 parts ammonium thiosulfate and 1 part γ-polyglulaminic acid be admitted.
    A field comparison test was conducted for the synergistic and stable nitrogen fertilizer prepared in Example 2 and a product in which the nitrogen fertilizer, the sulfur, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.08:0.05 :0.01 were added where the crops were corn, rice and wheat. 0.05 part of biochemical inhibitor includes 0.025 part of ammonium thiosulfate and 0.025 part of 3,4-dimethylpyrazole phosphate. polygluamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3,4-dimethyloyrazole phosphate, methanol having a volume concentration of 37%, the ammonium thiosulfate and the 3,4-dimethylpyrazole phosphate and 20 parts of γ-polyglutamic acid are added. The components of the comparative example of embodiment 2 include urea, double superphosphate, potassium chloride, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and γ-polyglutamic acid .
    The amount added is based on 100 parts urea urine adding 50 parts double superphosphate, 100 parts potassium chloride, 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazole phosphate and 1 part γ-polyglutamic acid.
    A field comparison test was conducted for the synergistic and stable nitrogen fertilizer prepared in Example 3 and a product in which the nitrogen fertilizer, the zinc, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.07:0.05 :0.01 were added, wherein the crops were corn, rice and wheat. The components of Working Example 3 include the urea, the zinc, the nitrification inhibitor and the γ-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate, methanol at a volume concentration of 37% capable of dissolving the 3,4-dimethylpyrazole phosphate and 20 parts γ-polyglutamic acid Components of the comparative example of embodiment 3 include the urea, the zinc and the γ-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate and 1 part γ-polyglutamic acid.
    The test results show that in the field crops of corn, rice and wheat, after applying the carbon-nitrogen coupled compound fertilizer described in this patent and the corresponding fertilizer product, in which the ratio of the added carbon source is lower than the lower limit of the protection range, the yield of the crops decreases significantly, indicating that a sufficient amount of carbon source added is a necessary condition to ensure crop yield,
    Field comparison test of synergistic and stable compound fertilizers and fertilizer products where the added amount of the carbon synergist is lower than the lower limit of the protection zone PR RP OR Naeh
    | | After the | | | After ; LL 2 comparison case | the | comparison case | 1 comparative example | example 2 ; I | Application | Example 1 | example 3 | game game of | | des | made . | _ | gskulturpfi | manufactured . L | Execution | manufactured | Execution | Lo.
    Example of execution | ter I | ad | fertilizer | DL example 2 ter | for example 3 | | ieis 1 | fertilizer . | | | | fertilizer | | Corn Yield | | | | kgmu | 947 913 | 889 942 984 © 20 Travel Income | Kgimu | 983 926 | 8e 926 971 | 928 Wheatert | | 354 322 | 308 342 365 | 334 | rag Kalmu | | | | Application Comparative Example 4 A field comparison trial without the addition of a nitrogen regulator synergist. The schedule of application was a single application of base fertilizer prior to sowing (corn and wheat) and transplanting (rice). The nitrogen fertilizer application rate in the
    Corn field corresponded to 12Kg/mu pure nitrogen, the application rate in paddy field corresponded to 15Kg/mu pure nitrogen, and the application rate in wheat field corresponded to 5Kg/mu pure nitrogen. The fertilizer application time for the corn field was May 1, which was the fertilizer application time for the wheat field April 15th and the sowing time for the paddy field was May 20th. A field comparison test was carried out for the synergistic and stable nitrogenous fertilizer prepared in Example 1 and a product in which the nitrogenous fertilizer, the magnesium, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.08:0:0 .2 were added where the crops were corn, rice and wheat. The components of embodiment 1 include the urea, the magnesium and the γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol at a volume fraction of 37% that can dissolve the ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added, which include the components of the comparative example of Working Example 1 the urea, the magnesium, and the γ-polybutamic acid. The amount added is based on 100 parts urea urine, adding 8 parts magnesium and 20 parts γ-polyglutamic acid.
    A field comparison experiment was conducted for the synergistic and stable nitrogen fertilizer prepared in Example 2 and a product in which the nitrogen fertilizer, the sulfur, the nitrogen regulator synergist and the carbon synergist with a weight ratio of 1:0.5:1:0.08:0:0 2 were added, carried out, the crops being corn, rice and wheat. The components of example 2 comprise the urea, the sulfur, the urea inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3,4-dimethylpyrazole phosphate, methanol with a volume concentration of 37%, the ammonium thiosulfate and the 3,4-dimethylpyrazole phosphate can dissolve, and 20 parts of γ-polyglutamic acid is added. The components of the comparative example of working example 2 include the urea, the sulfur and the γ-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 8 parts sulfur and 20 parts γ-polyglutamic acid.
    A field comparison experiment was conducted for the synergistic and stable nitrogen fertilizer prepared in Working Example 3 and a product in which the nitrogen fertilizer, the zinc, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.07:0:0 .2 were added where the crops were corn, rice and wheat. The components of embodiment 3 include the urea, the zinc, the nitrification inhibitor and the γ-polyglutamic acid. The amount added is based on 100 parts urea urine, using 7 parts zinc, 5 parts 3,4-
    dimethylpyrazole phosphate, methanol having a volume concentration of 37%, which can contain the 3,4-dimethylpyrazole phosphate, and 20 parts of γ-polyalutamic acid are added.
    The components of the comparative example of the working example 3 include the urea, the zinc and the carbon synergist.
    The amount added is based on 100 parts urea urine adding 7 parts zinc and 20 parts γ-polyglutamic acid.
    The comparative test results show that in the field crops corn, rice and wheat, after application of the carbon-nitrogen-coupled-nitrogen fertilizer described in this patent and the corresponding fertilizer product without inhibitors, the yield of the crop plants decreases, indicating that the benefit of this product in effective coordination of carbon and nitrogen, if no inhibitor is added, the nitrogen cannot be effectively controlled and the carbon source loses the importance of addition.
    Field Comparison Trial of Synergistic and Stable Nitrogen Fertilizers and Fertilizer Products Without Inhibitors After the comparison | Example 1 example of Example 2 example of Example 3 example of the gsculture plant produced according to the comparative application | manufactured | Execution | manufactured liters | Execution Maize Yield Rice Yield Wheat Yield Application Comparative Example 5 A field trial when the amount of nitrogen regulator synergist added is higher than the upper limit of the protection zone The application time was a single application of basic fertilizer before sowing (corn and corn) and transplanting (rice). The nitrogen fertilizer application rate in the corn field was equivalent to 12 Kg/mu of pure nitrogen, the application rate in the paddy field was equivalent to 15 Kg/mu of pure nitrogen, and the application rate in the welzen field was equivalent to 5 Kg/mu of pure nitrogen. The fertilizer application time for the corn field was May 1, the fertilizer application time for the wheat field was April 15, and the application time for the paddy field was May 20.
    A field comparison experiment was carried out for the synergistic and stable nitrogen fertilizer produced in Example 1 and a product in which the nitrogen fertilizer, the magnesium, the nitrogen regulator synergist and the carbon synergist with a
    Weight ratios of 1:0.5:1:0.08:0.2:0.2 were added where the crops were corn, rice and wheat.
    The components of example 1 comprise the urea, the urease inhibitor ammonium thiosulfate and the γ-polyglutamic acid.
    Based on 100 parts (100 kg} of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol at a volume fraction of 37% capable of solvating the ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added.
    The components of the comparative example of Working Example 1 include the urea, 8 parts magnesium, the ammonium thiosulfate and the γ-polyalutamic acid. The amount added is based on 100 parts urea urine where 8 parts magnesium, 20 parts ammonium
    thiosulfate and 20 parts of γ-polyalutamic acid are added.
    A field comparison test was carried out for the synergistic and stable nitrogen fertilizer prepared in example 2 and a product in which the nitrogen fertilizer, the sulfur, the nitrogen regulator synergist and the carbon synergist with a weight ratio of 1:0.5:1:0.08:0.2: 0.2 were added, carried out, the
    Crops were corn, rice and wheat, 0.2 part biochemical inhibitor includes 0.1 part urease inhibitor ammonium thiosulfate and 0.01 part nitrification inhibitor 3,4-dimethylpyrazole phosphate. The components of Example 2 include the urea, the sulfur, the urease -inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and dis y-polyglutamic acid.
    Based on 100 parts (100 kg)
    Urea urine is added 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3,4-dimethylpyrazoic phosphate, methanol with a volume concentration of 37% capable of dissolving ammonium thiosulfate and 3,4-dimethylpyrazoic phosphate, and 20 parts of y- Polyglutamic acid added. The components of the comparative example of embodiment 2 include the urea, the sulfur, the urease inhibitor
    ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the γ-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 8 parts sulfur, 10 parts ursase inhibitor ammonium thiosulfate, 2.5 parts nitrification inhibitor 3,4-dimethylpyrazole phosphate and 20 parts γ-polyglutamic acid synergistic and stable nitrogen fertilizer and a product in which the nitrogen fertilizer, the zinc, the nitrogen regulator synergist and the carbon synergist were added in a weight ratio of 1:0.5:1:0.07:0.2:0.2, wherein the crops were corn, rice and wheat. The components of Working Example 3 include the urea, the zinc, the nitrification inhibitor and the γ-polyglutamic acid.
    the
    Amount added is based on 100 parts of urea urine adding 7 parts of zinc, 5 parts of 3,4-dimethylpyrazole phosphate, methanol having a volume concentration of 37% capable of iGsen the 3,4-dimethylpyrazole phosphate and 20 parts of γ-polybutamic acid.
    The components of the comparative example of the embodiment 3 include the urea,
    the zinc, the nitrification inhibitor and the v-polyglutamic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 20 parts nitrification inhibitor 3,4-dimethyloyrazole phosphate and 20 parts γ-polyglulamine acid.
    Under the condition that the added amount of the inhibitor exceeds the upper limit of the protection range, the yield of the crops does not change significantly, indicating that the addition amount of the inhibitor in the protection range is the optimum addition amount.
    When the amount added exceeds the protection range, unnecessary production costs are increased, Field comparison trial of synergistic and stable nitrogen fertilizers and fertilizer products in which the amount of inhibitor added exceeds the upper limit of the protection range After | Comparison After the | Comparable | After the | Comparative | the | example Application example 1 | example of | Example 2 example of the | Example 3 | of the cultivated version | hergestelk version hergest | Austühru ter fertilizer | for example 1 ter fertilizer | example 2 | ter | ngsexample | fertilizer | ice 3 corn yield | Travel Yield | Wheat Yield | | Ka/mu 354 358 | 362 365 349 | 344 Application Comparison Example 6 A field comparison experiment when the amount of nitrogen regulator synergist added is lower than the lower limit of the protection range.
    The application time was a single application of basic fertilizer before sowing (maize and wheat) and transplanting (rice). The nitrogen fertilizer application rate in the corn field was 12 Kg/mu pure nitrogen, the application rate in the rice field was 15 Kg/mu pure nitrogen, and the application rate in the wheat field was 5 Kg/mu pure nitrogen, the fertilizer application time for the corn field was May 1, the fertilizer application time for the wheat field was April 15, and the application time for the paddy field was May 20.
    A field comparison test was carried out for the synergistic and stable nitrogen fertilizer produced in Example 1 and a product in which the nitrogen fertilizer,
    the magnesium, the nitrogen regulator synergist and the carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.0005:0.2, where the crops were corn, rice and wheat. The components of embodiment 1 include the urea, the magnesium, the urease inhibitor ammonium thiosulfate and the γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol with a volume fraction of 37% that can dissolve the ammonium thiosulfate, and 20 parts of γ-polyglutamic acid are added the urea, the magnesium, the urease inhibitor ammonium thiosulfate and the γ-polyglutamic acid The amount added is based on 100 parts urea urine adding 8 parts magnesium, 0.05 parts ammonium thiosulfate and 20 parts γ-polyglutamic acid.
    A field comparison experiment was conducted for the synergistic and stable nitrogen fertilizer prepared in Working Example 2 and a product in which the nitrogen fertilizer, the sulfur, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.08:0.0005 :0.2 were added, wherein the crops were corn, rice and wheat, 0.1 part of biochemical inhibitor comprises 0.00025 part of urease inhibitor and 0.00025 part of nitrification inhibitor sulphur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethyloyrazoiphosphate and γ-polyglutamic acid. Based on 100 parts (100 kg) of urea urine, 8 parts sulfur, 2.5 parts ammonium thiosulfate, 2.5 parts 3,4-dimethylpyrazole phosphate, methanol with a volume concentration of 37%, the ammonium thiosulfate and the 3,4-dimethylpyrazole phosphate and 20 parts of γ-polyglutamic acid are added The components of the comparative example of Working Example 2 include the urea, the sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3,4-dimethylpyrazole phosphate and the γ-polyglutamic acid 100 parts of urea urine, wherein 8 parts of sulfur, 0.025 parts of urease inhibitor ammonium thiosulfate, 0.025 parts of nitrification inhibitor 3,4-dimethylpyrazole phosphate and 20 parts of γ-polygulamic acid are added.
    A field comparison test was conducted for the synergistic and stable nitrogen fertilizer prepared in Example 3 and a product in which the nitrogen fertilizer, the zinc, the nitrogen regulator synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.07:0.0005 :0.2 were added where the crops were corn, rice and wheat. The components of embodiment 3 include the urea, the zinc, the nitrification inhibitor and the γ-polyglutamic acid. The amount added is based on 100 parts urea urine adding 7 parts zinc, 5 parts 3,4-dimethylpyrazole phosphate, methanol having a volume concentration of 37% capable of dissolving the 3,4-dimethylpyrazole phosphate and 20 parts γ-polyglutamic acid
    Components of the comparative example of Working Example 3 include the urea, the zinc, the nitrification inhibitor, and the γ-polyalutamic acid.
    The amount added is based on 100 parts urea urine adding 7 parts zinc, 0.05 parts nitrification inhibitor 3,4-dimethylpyrazole phosphate and 20 parts γ-polyglutamic acid.
    Application Comparative Example 7 In this comparative example, materials outside the scope were selected to conduct field tests to verify the comparison, the application rate in the corn field corresponded to 12 kg/mu of pure nitrogen, which corresponds to the application rate in the paddy field
    Kg/mu of pure nitrogen and the application rate in the wheat field corresponded to 5 Kg/mu of pure nitrogen. The application rate was a one-time application of basic fertilizer before sowing (maize and wheat) and transplanting (rice). Fertilizer application time for the corn field was May 1, fertilizer application time for the wheat field was April 15, and application time for the paddy field was May 20,
    15 The nitrogen regulator synergist is selected from n-butylthiophosphoric acid triamide, 3,5-dimethylpyrazoi, with L-polyglutamic acid being selected for the carbon synergist, and wherein the N-butylthiophosphoric acid triamide and 3,5-dimethylpyrazoi are a classic urease inhibitor and nitrification inhibitor, a large one A number of field trials have confirmed that they have good urease and nitrification inhibition.
    In the comparative example they are combined and used with the carbon synergist L-polyglutamic acid. The L-polyglutamic acid is an isomer of the carbonaceous material γ-polyglutamic acid protected by the present application and it is formed by the condensation of glutamic acid monomers by various combinations From field test results of this comparative example, it was found that when the
    Carbon Synergist is changed to L-polyglutamic acid, the soil nitrogen retention is significantly reduced and reflected in the aerial part, the yield of crops also drops significantly.
    In this experiment, compared to Example 1, the composition of the product includes 100 parts urea, 8 parts magnesium, 5 parts N-n-butylphosphorothioate triamine, and 20 parts L-polyglutamic acid; the composition of the product compared to Example 2 comprises 100 parts urea, 8 parts sulfur, 2.5 parts N-n-butylthiophosphoric acid triamide, 2.5 parts 3,5-dimethylpyrazole and 20 parts L-polybutamic acid; the composition of the product compared to Example 3 includes urea 100 parts, zinc 7 parts, 3,5-dimethylpyrazole 5 parts and L-palyglutamic acid 20 parts. The results of Comparative Experiment 7 indicate that the intended functions cannot be achieved when Substances other than the carbonaceous materials described in this application are used, which also indicates that the gist of the products described in this application is in the
    Cooperation between the nitrogen source, the nitrogen regulator synergist and the carbonaceous synergist.
    Field comparison test under the conditions of using an out-of-scope nitrogen regulator synergist and carbon synergist EO Comparison | Compare 110 After the | | After the | 22 | example | After the | example I | ; 200 Example 1 | 202 | Example 3 | Comparative example application | of | Example 2 | of | . manufactured | LE made! | of the executive crop. | leadership | manufactured | leadership- PL, ter fertilizer |. , . LL, ter | example 3 | example | the fertilizer | for example | | | fertilizer | 1iz | Masera TUT Kgimu 947 88 959 | 805 949 | 911 Travel Income | | | kg/mu 953 | 887 947 908 969 | 919 wheat yield | 354 | 335 362 ; 312 349 | 324 Ka/mu | | | The above content is a detailed explanation of the present invention in connection with preferred embodiments. However, the invention is not limited to the described embodiments. All changes, equivalent substitutions and improvements made under the spirit and principle of the present invention are intended to be covered by the scope of the present invention be considered.
    权利要求:
    Claims (6)
    [1]
    1. A synergistic and stable nitrogen fertilizer, characterized in that the fertilizer components include nitrogen fertilizer, intermediate and trace elements, a nitrogen regulator synergist, and a carbon source synergist; where in parts by weight the ratio of nitrogen fertilizer, middle and trace elements, nitrogen regulator synergists and carbon synergists is 1:0.05-0.1:0.001-0.1:0.1-0.3 (preferably 1:0.08-0.1:0.02- 0.1:0.15-0.25, more preferably 1:0.1:0.05:0.2).
    [2]
    2. Synergistic and stable compound fertilizer according to claim 1, characterized in that the nitrogen regulator synergist comprises a urease inhibitor and a nitrification inhibitor or the nitrogen regulator synergist is the urease inhibitor or the nitrogen regulator synergist is the nitrification inhibitor; wherein the urease inhibitor comprises one or more than two of N-butylthiophosphoric triamide, hydroquinone, phosphorus triamide, ammonium thiosulfate, P-benzoquinone, cyclohexylphosphorothioate triamide, cyclohexyl phosphate triamide, hexaamidocyclotriphosphazene, N-halo-2-zoidrene, NN-dinaloen-2-zoidrene, etc ;and wherein the nitrification inhibitor is one or more than two of cepyridine, dicyandiamide, 1-methylpyrazole-1-hydroxyamide, 3-methylpyrazole, ethyleneurea, chlorazole, 4-aminotriazole, thiourea, acetylene, 2-ethynylpyridine, sulfathiazole, amidinothiourea, 1-amino -2 4-dimethylpyrazole phosphate, sodium thiosulfate, potassium azide, sodium azide, calcium carbide, 2,5-chloroaniline, 3-acetanilide, toluene, carbon disulfide, phenylacetylene, 2-propyn-1-ol, ammoxidized lignin, phenethylphosphonium diamide, etc.
    [3]
    3. Synergistic and stable nitrogen fertilizer according to claim 1, characterized in that the carbon source is one or more than two of polyglutamic acid, humic acid and fulvic acid; preferably γ-polyglutamic acid;wherein the γ-polyglutamic acid is formed by the condensation of D- and L-type glutamic acid molecules through the amide bond between the a-amino group and the γ-carboxylic acid group, and its molecular weight is between 50,000 and 1 million daltons, and wherein the structural formula is as represented by Formula 1:
    Or vh Nr HE SE Den de Formula 1 Structural formula of polyglutamic acid
    [4]
    A synergistic and stable nitrogenous fertilizer according to claim 1, characterized in that the nitrogenous fertilizer is urea, the intermediate and trace elements being calcium, magnesium, sulphur, boron, silicon, iron and zinc.
    [5]
    5. Combination of the protective chelation process and the multi-stage compression process for fertilizer production, combining yeast autolysis and complex enzymatic hydrolysis together to produce an amino acid solution through a multi-stage compression process accompanied with a biochemical reaction, and this step involves the formation of low molecular weight amino acids, and then the trace element solution is mixed with the prepared amino acid solution, and the chelating reaction occurs in the chelating process, so that the amino acids and the trace elements are replaced with the groups on the binary C atom to form a chelate of amino acids through the chelation and obtain trace elements. and wherein the technological process for producing this substance is: enzyme mother sludge — press filtration — autolysis — enzyme hydrolysis — filtration — dosing — chelation — refrigeration — filtration — compounding — product packaging. and wherein the process has mild reaction conditions and is easy to operate.
    [6]
    6. Production method for the synergistic and stable nitrogen fertilizer according to any one of claims 1 to 4, characterized in that the inhibitor is dissolved in an organic solvent according to the above dosage and the mixture is mechanically mixed by a mixing pump, wherein the carbonaceous material y- polyglutamic acid is dissolved in the water and mixed evenly; and the mixed solution of the two substances is then granulated by the ordinary granulating machine for urea production to obtain a synergistic and stable nitrogen fertilizer in which the particle size of 0.85 to 2.8mm accounts for more than 93%.
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    CN101450880B|2007-12-07|2012-06-06|中国科学院沈阳应用生态研究所|Nitrogen fertilizer compound synergist and preparation method|
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    法律状态:
    2022-02-09| FG| Patent granted|Effective date: 20220104 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN202011201432|2020-11-02|
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