CN113185356A - Formula of special synergist for soil improvement and preparation method thereof - Google Patents
Formula of special synergist for soil improvement and preparation method thereof Download PDFInfo
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- CN113185356A CN113185356A CN202110538044.XA CN202110538044A CN113185356A CN 113185356 A CN113185356 A CN 113185356A CN 202110538044 A CN202110538044 A CN 202110538044A CN 113185356 A CN113185356 A CN 113185356A
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- lime
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- soil improvement
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/50—Surfactants; Emulsifiers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
Abstract
The invention discloses a formula of a special synergist for soil improvement and a preparation method thereof, wherein the synergist comprises the following raw materials in percentage by weight: 1-6% of phosphorite, 2-8% of magnesium silicate mineral, 4-9% of potassium sulfate, 5-10% of compound amino acid, 4-9% of urea, 2-6% of ferment bacteria, 1-8% of urea formaldehyde, 3-9% of metal protease, 13-18% of humic acid, 14-20% of lime, 11-20% of crop straw, 14-22% of chicken manure, 0.2-2% of biological microbial inoculum, 0.1-1% of urease inhibitor, 0.2-1% of ammonia stabilizer, 0.4-0.8% of yield-increasing amine, 0.1-0.2% of hydrogen peroxide silver ion solution and 0.2-0.6% of sepiolite. The formula of the special soil improvement synergist comprises the following components: the metal protease is added, the metal protease has long-chain protease and anionic surfactant, the release of nitrogen is controlled, the fixation of water-soluble phosphorus is inhibited, trace elements are gathered, the effective period of the synergist is prolonged, the synergism is obviously increased, and polypeptide components in the metal protease can play roles in rooting, nourishing roots and strengthening roots. The ferment bacteria are added, and are beneficial to fermenting and decomposing organic materials and helping soil to decompose the crop residue in the previous season.
Description
Technical Field
The invention relates to the technical field of synergists, in particular to a formula of a special synergist for soil improvement and a preparation method thereof.
Background
A synergist is generally a substance which does not have a specific activity or has a low activity, but when the synergist is mixed with a substance with the activity, the performance of the active substance can be greatly improved. Cultivated land soil is in the normal use in-process, and the material that is favorable to vegetation in the soil disappears gradually, and harmful substance increases, breeds easily and is harmful, leads to crops output low, and the quality descends, influences economic benefits, consequently at present before new round of farming, uses soil synergist to improve soil quality more, improves the growing environment of crops, guarantees the quality of agricultural product, and current soil synergist: the fertilizer is mainly prepared from trace elements necessary for crops and other auxiliary agents, only the element absorption of the crops is increased, but the element types are limited, the long-term requirements of the crops cannot be met, the soil structure cannot be improved, and the long-term maintenance of the soil is not facilitated.
Therefore, we propose a formulation of a soil improvement synergist and a preparation method thereof so as to solve the problems set forth above.
Disclosure of Invention
The invention aims to provide a formula of a special soil improvement synergist and a preparation method thereof, and aims to solve the problems that the existing soil synergist in the market is mainly prepared from essential trace elements of crops and other assistants, only the element absorption of the crops is increased, but the element types are limited, the long-term requirements of the crops cannot be met, the soil structure cannot be improved, and the long-term maintenance of the soil is not facilitated.
In order to achieve the purpose, the invention provides the following technical scheme: the formula of the special synergist for soil improvement comprises the following raw materials in percentage by weight: 1-6% of phosphorite, 2-8% of magnesium silicate mineral, 4-9% of potassium sulfate, 5-10% of compound amino acid, 4-9% of urea, 2-6% of ferment bacteria, 1-8% of urea formaldehyde, 3-9% of metal protease, 13-18% of humic acid, 14-20% of lime, 11-20% of crop straw, 14-22% of chicken manure, 0.2-2% of biological microbial inoculum, 0.1-1% of urease inhibitor, 0.2-1% of ammonia stabilizer, 0.4-0.8% of yield-increasing amine, 0.1-0.2% of hydrogen peroxide silver ion solution and 0.2-0.6% of sepiolite.
A preparation method of a special synergist for soil improvement comprises the following steps:
(1) crushing lime by using a lime mill, and placing the crushed lime in a mixer;
(2) grinding sepiolite to a certain degree by using a grinder, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing, stirring for 3-6min, and air-drying to prepare a bactericide;
(3) adding crop straws and chicken manure into a grinder to be ground, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into a mixer;
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metal protease by using a grinding machine, and adding the ground mixture into a mixer;
(5) putting the phosphorite and the magnesium silicate mineral into an electric furnace, adjusting the temperature of the electric furnace to 1400-1500 ℃ to melt and mix the phosphorite and the magnesium silicate mineral, and drying and grinding the mixture to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 30-50 min;
(7) adding the biological agent, the urease inhibitor, the ammonia stabilizer, the yield-increasing amine and the ferment bacteria into a mixer, starting the mixer, and mixing for 15-20min to prepare the synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
Preferably, after the lime in the step (1) is crushed, large-particle lime is screened out, then the lime powder after screening is crushed by using a lime mill, and the process is repeated for 2-3 times, so that no large particles exist in the lime powder.
Preferably, the model of the mixer in the step (1) is a DSH double-helix conical mixer, the material is carbon steel, and the driving configuration power is 1.5KW-55 KW.
Preferably, the grinder in the step (2) adopts a ball milling mode, the grinding time is 5-10min, a stirrer is used for stirring the hydrogen peroxide silver ion solution and the sepiolite powder, the stirring time is 5-7min, the driving power is 15-30KW, and the air drying is 15-20 min.
Preferably, the pulverizer in the step (3) adopts a blade pulverizer to pulverize the crop straws for 20-30min, pulverize the chicken manure for 30-40min, mix the crop straw powder, the crop straw powder and the bactericide by using a stirrer, mix for 10-16min, and stand in the open air after mixing.
Preferably, the grinding time of the grinder in the step (4) is 5-6min, and urea formaldehyde, urea, potassium sulfate, compound amino acid and metalloprotease are mixed and ground simultaneously.
Compared with the prior art, the invention has the beneficial effects that: the formula of the special soil improvement synergist comprises the following components: the metal protease is added, the metal protease has long-chain protease and anionic surfactant, the release of nitrogen is controlled, the fixation of water-soluble phosphorus is inhibited, trace elements are gathered, the effective period of the synergist is prolonged, the synergism is obviously increased, and polypeptide components in the metal protease can play roles in rooting, nourishing roots and strengthening roots. The enzyme bacteria are added, so that the enzyme bacteria are beneficial to fermenting and decomposing organic materials, help soil to decompose the residue of crops in the previous season, and can also reduce the problems of chemical fertilizer residue, pesticide pollution, soil hardening and the like. The humic acid is added, so that the humic acid is beneficial to transmitting nutrient elements to crops, can improve the soil structure, is beneficial to long-term maintenance of the soil and is beneficial to the growth of the crops. The phosphorus ore, the potassium sulfate and the urea are added, the content of phosphorus, potassium and nitrogen elements in the soil is increased, sufficient phosphorus, potassium, nitrogen and other elements are provided for crops, the element system in the soil is improved, and the composite amino acid is added, so that more comprehensive nutrition can be provided for plants. The urea formaldehyde is added, after being applied to soil, the urea formaldehyde is quickly dissolved into colloid by water in the soil and is tightly adsorbed around a plant root system, so that the loss of nutrients is avoided, and the effects of drought resistance and stress resistance are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The formula of the special synergist for soil improvement comprises the following raw materials in percentage by weight: 3% of phosphorite, 3% of magnesium silicate mineral, 6% of potassium sulfate, 7% of compound amino acid, 6% of urea, 4% of ferment bacteria, 4% of urea formaldehyde, 4% of metal protease, 16% of humic acid, 16% of lime, 16% of crop straw, 17% of chicken manure, 1.2% of biological microbial inoculum, 0.4% of urease inhibitor, 0.5% of ammonia stabilizer, 0.6% of yield-increasing amine, 0.1% of hydrogen peroxide silver ion solution and 0.2% of sepiolite.
The preparation method comprises the following steps:
(1) crushing lime by using a lime mill to screen large-particle lime, crushing the screened lime powder by using the lime mill, repeating the steps for 3 times to ensure that no large particles exist in the lime powder, and placing the crushed lime powder in a DSH double-helix conical mixer;
(2) grinding the sepiolite to a certain degree by using a ball mill grinder for 6min, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing by using a stirrer, stirring for 6min, and air-drying for 20min to prepare the bactericide;
(3) sequentially adding crop straws and chicken manure into a blade grinder for grinding, wherein the grinding time of the crop straws is 25min, the grinding time of the chicken manure is 35min, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into the mixer in the step (1);
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metalloprotease by using a grinding machine for 6min, and adding the ground mixture into the mixer in the step (1);
(5) putting phosphorite and magnesium silicate minerals into an electric furnace, adjusting the temperature of the electric furnace to 1400 ℃, melting and mixing the phosphorite and the magnesium silicate minerals, drying and grinding to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 40 min;
(7) adding biological agent, urease inhibitor, ammonia stabilizer, yield-increasing amine and ferment bacteria into a mixer, starting the mixer, and mixing for 20min to obtain a synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
Example two
The formula of the special synergist for soil improvement comprises the following raw materials in percentage by weight: 2% of phosphorite, 2% of magnesium silicate mineral, 5% of potassium sulfate, 10% of compound amino acid, 5% of urea, 3% of ferment bacteria, 3% of urea formaldehyde, 7% of metal protease, 13% of humic acid, 15% of lime, 15% of crop straw, 22% of chicken manure, 1.4% of biological microbial inoculum, 0.2% of urease inhibitor, 0.4% of ammonia stabilizer, 0.4% of yield-increasing amine, 0.2% of hydrogen peroxide silver ion solution and 0.4% of sepiolite.
The preparation method comprises the following steps:
(1) crushing lime by using a lime mill to screen large-particle lime, crushing the screened lime powder by using the lime mill, repeating the steps for 2 times to ensure that no large particles exist in the lime powder, and placing the crushed lime powder in a DSH double-helix conical mixer;
(2) grinding the sepiolite to a certain degree by using a ball mill grinder, wherein the grinding time is 5min, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing by using a stirrer, stirring for 5min, and air-drying for 15min to prepare the bactericide;
(3) sequentially adding crop straws and chicken manure into a blade grinder for grinding for 24min and 30min, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into the mixer in the step (1);
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metalloprotease by using a grinding machine for 5min, and adding the ground mixture into the mixer in the step (1);
(5) putting phosphorite and magnesium silicate minerals into an electric furnace, adjusting the temperature of the electric furnace to 1500 ℃, melting and mixing the phosphorite and the magnesium silicate minerals, drying and grinding to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 45 min;
(7) adding the biological agent, the urease inhibitor, the ammonia stabilizer, the yield-increasing amine and the ferment bacteria into a mixer, starting the mixer, and mixing for 15min to prepare the synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
EXAMPLE III
The formula of the special synergist for soil improvement comprises the following raw materials in percentage by weight: 4% of phosphorite, 4% of magnesium silicate mineral, 6% of potassium sulfate, 5% of compound amino acid, 8% of urea, 2% of ferment bacteria, 2% of urea formaldehyde, 6% of metal protease, 18% of humic acid, 14% of lime, 11% of crop straw, 22% of chicken manure, 0.8% of biological microbial inoculum, 0.6% of urease inhibitor, 0.7% of ammonia stabilizer, 0.4% of yield-increasing amine, 0.1% of hydrogen peroxide silver ion solution and 0.4% of sepiolite.
The preparation method comprises the following steps:
(1) crushing lime by using a lime mill to screen large-particle lime, crushing the screened lime powder by using the lime mill, repeating the steps for 3 times to ensure that no large particles exist in the lime powder, and placing the crushed lime powder in a DSH double-helix conical mixer;
(2) grinding the sepiolite to a certain degree by using a ball mill grinder, wherein the grinding time is 8min, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing by using a stirrer, stirring for 5min, and air-drying for 16min to prepare the bactericide;
(3) sequentially adding crop straws and chicken manure into a blade grinder for grinding, wherein the grinding time of the crop straws is 24min, the grinding time of the chicken manure is 36min, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into the mixer in the step (1);
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metalloprotease by using a grinding machine for 6min, and adding the ground mixture into the mixer in the step (1);
(5) putting phosphorite and magnesium silicate minerals into an electric furnace, adjusting the temperature of the electric furnace to 1450 ℃, melting and mixing the phosphorite and the magnesium silicate minerals, drying and grinding to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 35 min;
(7) adding biological agent, urease inhibitor, ammonia stabilizer, yield-increasing amine and ferment bacteria into a mixer, starting the mixer, and mixing for 18min to obtain a synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
Example four
The formula of the special synergist for soil improvement comprises the following raw materials in percentage by weight: 1% of phosphorite, 2% of magnesium silicate mineral, 9% of potassium sulfate, 5% of compound amino acid, 4% of urea, 2% of ferment bacteria, 8% of urea formaldehyde, 6% of metal protease, 18% of humic acid, 14% of lime, 15% of crop straw, 18% of chicken manure, 0.2% of biological microbial inoculum, 0.6% of urease inhibitor, 0.8% of ammonia stabilizer, 0.8% of yield-increasing amine, 0.2% of hydrogen peroxide silver ion solution and 0.4% of sepiolite.
The preparation method comprises the following steps:
(1) crushing lime by using a lime mill to screen large-particle lime, crushing the screened lime powder by using the lime mill, repeating the steps for 2 times to ensure that no large particles exist in the lime powder, and placing the crushed lime powder in a DSH double-helix conical mixer;
(2) grinding the sepiolite to a certain degree by using a ball mill grinder, wherein the grinding time is 9min, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing by using a stirrer, stirring for 7min, and air-drying for 18min to prepare the bactericide;
(3) sequentially adding crop straws and chicken manure into a blade grinder for grinding, wherein the grinding time of the crop straws is 22min, the grinding time of the chicken manure is 30min, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into the mixer in the step (1);
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metalloprotease by using a grinding machine for 5min, and adding the ground mixture into the mixer in the step (1);
(5) putting phosphorite and magnesium silicate minerals into an electric furnace, adjusting the temperature of the electric furnace to 1480 ℃ to melt and mix the phosphorite and the magnesium silicate minerals, and drying and grinding the mixture to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 30 min;
(7) adding biological agent, urease inhibitor, ammonia stabilizer, yield-increasing amine and ferment bacteria into a mixer, starting the mixer, and mixing for 16min to obtain a synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The formula of the special synergist for soil improvement is characterized by comprising the following raw materials in percentage by weight: 1-6% of phosphorite, 2-8% of magnesium silicate mineral, 4-9% of potassium sulfate, 5-10% of compound amino acid, 4-9% of urea, 2-6% of ferment bacteria, 1-8% of urea formaldehyde, 3-9% of metal protease, 13-18% of humic acid, 14-20% of lime, 11-20% of crop straw, 14-22% of chicken manure, 0.2-2% of biological microbial inoculum, 0.1-1% of urease inhibitor, 0.2-1% of ammonia stabilizer, 0.4-0.8% of yield-increasing amine, 0.1-0.2% of hydrogen peroxide silver ion solution and 0.2-0.6% of sepiolite.
2. The preparation method of the special synergist for soil improvement is characterized by comprising the following steps:
(1) crushing lime by using a lime mill, and placing the crushed lime in a mixer;
(2) grinding sepiolite to a certain degree by using a grinder, adding the hydrogen peroxide silver ion solution into the sepiolite powder, fully stirring and mixing, stirring for 3-6min, and air-drying to prepare a bactericide;
(3) adding crop straws and chicken manure into a grinder to be ground, adding the bactericide in the step (2), uniformly mixing, standing for 30min, and putting the mixture after standing into a mixer;
(4) grinding urea-formaldehyde, urea, potassium sulfate, compound amino acid and metal protease by using a grinding machine, and adding the ground mixture into a mixer;
(5) putting the phosphorite and the magnesium silicate mineral into an electric furnace, adjusting the temperature of the electric furnace to 1400-1500 ℃ to melt and mix the phosphorite and the magnesium silicate mineral, and drying and grinding the mixture to prepare mixture powder;
(6) starting a mixer, fully mixing the substances prepared in the step (1), the step (2), the step (3) and the step (5) by the mixer, and mixing for 30-50 min;
(7) adding the biological agent, the urease inhibitor, the ammonia stabilizer, the yield-increasing amine and the ferment bacteria into a mixer, starting the mixer, and mixing for 15-20min to prepare the synergist;
(8) and (4) placing the synergist prepared in the step (7) into a metal barrel, and sealing and storing.
3. The preparation method of the special soil improvement synergist according to claim 2, characterized in that: and (2) after the lime in the step (1) is crushed, screening out large-particle lime, crushing the screened lime powder by using a lime mill, and repeating for 2-3 times to ensure that no large particles exist in the lime powder.
4. The preparation method of the special soil improvement synergist according to claim 2, characterized in that: the model of the mixer in the step (1) is a DSH double helix conical mixer, the material is carbon steel, and the driving configuration power is 1.5KW-55 KW.
5. The preparation method of the special soil improvement synergist according to claim 2, characterized in that: and (3) the grinding machine in the step (2) adopts a ball milling mode, the grinding time is 5-10min, a stirring machine is used for stirring the hydrogen peroxide silver ion solution and the sepiolite powder, the stirring time is 5-7min, the driving power is 15-30KW, and the air drying is carried out for 15-20 min.
6. The preparation method of the special soil improvement synergist according to claim 2, characterized in that: the pulverizer in the step (3) adopts a blade pulverizer to pulverize the crop straws for 20-30min, pulverize the chicken manure for 30-40min, mix the crop straw powder, the crop straw powder and the bactericide by using a stirrer, mix for 10-16min, and stand in the open air after mixing.
7. The preparation method of the special soil improvement synergist according to claim 2, characterized in that: and (4) grinding for 5-6min by using a grinder in the step (4), and grinding the urea formaldehyde, the urea, the potassium sulfate, the compound amino acid and the metalloprotease simultaneously after mixing.
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| CN111039716A (en) * | 2019-12-26 | 2020-04-21 | 中化农业（临沂）研发中心有限公司 | Synergistic compound fertilizer special for wheat and preparation method thereof |
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- 2021-05-18 CN CN202110538044.XA patent/CN113185356A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101450880A (en) * | 2007-12-07 | 2009-06-10 | 中国科学院沈阳应用生态研究所 | Nitrogen fertilizer compound synergist and preparation method |
| CN103360183A (en) * | 2013-07-16 | 2013-10-23 | 中农集团控股股份有限公司 | Synergistic urea containing multiple trace elements and preparation method of synergistic urea |
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| CN111039716A (en) * | 2019-12-26 | 2020-04-21 | 中化农业（临沂）研发中心有限公司 | Synergistic compound fertilizer special for wheat and preparation method thereof |
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