CN111875441A - Stable long-acting compound fertilizer and preparation method thereof - Google Patents
Stable long-acting compound fertilizer and preparation method thereof Download PDFInfo
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- CN111875441A CN111875441A CN202010594673.XA CN202010594673A CN111875441A CN 111875441 A CN111875441 A CN 111875441A CN 202010594673 A CN202010594673 A CN 202010594673A CN 111875441 A CN111875441 A CN 111875441A
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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
- 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
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- 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
- 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
- C05G3/30—Anti-agglomerating additives; Anti-solidifying additives
-
- 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
-
- 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
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
Abstract
The invention relates to a stable long-acting compound fertilizer which comprises, by weight, 50-130 parts of coated urea, 10-25 parts of calcium superphosphate, 5-20 parts of ammonium chloride, 7-25 parts of potassium chloride, 10-30 parts of sweet potato type citric acid residues, 6-30 parts of vinasse, 3-18 parts of EDTA chelated zinc, 4-20 parts of amino acid chelated iron, 10-25 parts of plant growth regulator, 5-18 parts of urease inhibitor and 6-28 parts of anti-caking agent. The compound fertilizer can meet the requirement of crops on nutrition in reasonable proportion, slowly release the nutrients, improve the utilization rate of the fertilizer, promote the crops to absorb the nutrients, enhance the stress resistance of the crops and reduce soil hardening and environmental pollution caused by fertilizer loss.
Description
Technical Field
The invention belongs to the field of agricultural fertilizers, and particularly relates to a stable long-acting compound fertilizer and a preparation method thereof.
Background
The economy of China develops rapidly in recent decades, but the economy brings very serious problems at the same time. On one hand, the discharge of three wastes and the unreasonable application of fertilizers, pesticides, fertilizers and the like lead the total farmland area polluted by heavy metals to increasingly occupy the whole cultivated land in China. Heavy metal pollution not only causes the soil fertility to be reduced, but also probably causes the heavy metal content of agricultural products to exceed the national standard, harms human and livestock health, and seriously influences the environmental quality and economic sustainable development. On the other hand, most compound fertilizer series products on the market can hardly reach the biodegradation standard, not only increase the soil burden, but also have certain influence on crops.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects and shortcomings in the background art and providing the stable long-acting compound fertilizer.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the stable long-acting compound fertilizer comprises the following components in parts by weight: 50-130 parts of coated urea, 10-25 parts of calcium superphosphate, 5-20 parts of ammonium chloride, 7-25 parts of potassium chloride, 10-30 parts of sweet potato type citric acid residues, 6-30 parts of vinasse, 3-18 parts of EDTA chelated zinc, 4-20 parts of amino acid chelated iron, 10-25 parts of plant growth regulator, 5-18 parts of urease inhibitor and 6-28 parts of anti-caking agent.
Preferably, the compound fertilizer comprises the following components in parts by weight: 60-120 parts of coated urea, 12-20 parts of calcium superphosphate, 7-17 parts of ammonium chloride, 9-20 parts of potassium chloride, 12-26 parts of sweet potato type citric acid residues, 7-26 parts of vinasse, 4-16 parts of EDTA chelated zinc, 5-16 parts of amino acid chelated iron, 12-21 parts of plant growth regulator, 6-15 parts of urease inhibitor and 7-24 parts of anti-caking agent.
The mass ratio of the coated material to the urea in the coated urea is 1:2-6, and the coated material is composed of polyvinyl alcohol and polyurethane in the mass ratio of (4-7) to (3-7).
The anti-caking agent is inorganic powder or a surfactant.
The inorganic powder is one or more than two of kaolin, talcum powder, zeolite powder or bentonite, and the surfactant is one or more than two of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium stearate and calcium stearate.
The plant growth regulator is one or more of diethyl aminoethyl hexanoate, forchlorfenuron, cynarin or sodium naphthylacetate.
The preparation method of the stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse with a sieve of 60-80 meshes, uniformly mixing, fermenting for 6-12 days at 25-35 ℃, stirring once in the morning and at the evening every day, wherein the stirring time is 18-35 minutes each time, and the stirring speed is 42-85 rpm, so as to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) and (3) mixing the material 1, the plant growth regulator, the urease inhibitor, the anti-blocking agent and the coated urea to obtain a finished product.
Urea: is the nitrogen fertilizer with the highest nitrogen content at present. Urea is a high-concentration nitrogen fertilizer, belongs to a neutral quick-acting fertilizer, and can also be used for producing various compound fertilizers. No harmful substance is left in the soil, and no adverse effect is caused after long-term application. Urea is suitable for use as a base fertilizer and a top dressing, and is sometimes used as a seed fertilizer. The urea is suitable for all crops and all soils, can be used as a base fertilizer and a top dressing, and can be applied to both dry and paddy fields. Urea can promote cell division and growth, and make branches and leaves grow luxuriantly.
Monoammonium phosphate: good chemical stability and good compatibility with ammonium sulfate, potassium dihydrogen phosphate and the like. Is one of the main varieties of high-concentration phosphorus compound fertilizers. The product is generally used as additional fertilizer and is also the most main basic raw material for producing ternary compound fertilizer and BB fertilizer; the product is widely applicable to various grain crops and economic crops. Application as a fertilizer during crop growth is most suitable, being acidic in the soil, and also being superior to other fertilizers in alkaline soil.
Ammonium sulfate: it is mainly used as fertilizer and is suitable for various soils and crops. A high-quality nitrogen fertilizer (commonly called "fertilizer field powder") is suitable for general soil and crops, and can make branches and leaves grow vigorously, raise fruit quality and yield, and raise the resistance of crops to disasters, so that it can be used as base fertilizer, additional fertilizer and seed fertilizer.
Amino acid chelated zinc: the amino acid chelated zinc is a zinc structural form in which zinc ions are embedded between two amino acid molecules. Two amino acid molecules clamp a zinc ion like crab pincers to form an ultra-stable chelating structure. Due to amino acids
The plant can be directly absorbed by the plant to stimulate the growth of the plant, and the plant can be directly utilized under the condition of no photosynthesis; when used as chelate, it can protect metal ion from side reaction with other substances, and after the metal ion is reached to the required position of plant, it can be absorbed by crops, so that the amino acid medium-trace element chelate is an organic medium-trace element fertilizer with good performance, low cost and moderate chelating constant, and can effectively solve the contradiction between balanced fertilizer preparation and balanced absorption of crops
Potassium sulfate: the potassium sulfate is colorless crystal, has small hygroscopicity, is not easy to agglomerate, has good physical properties, is convenient to apply and is a good water-soluble potassium fertilizer
Potassium dihydrogen phosphate: the fertilizer is used as a high-efficiency phosphorus-potassium compound fertilizer in agriculture; the potassium dihydrogen phosphate product is widely suitable for various types of cash crops, grains, melons, fruits, vegetables and almost all types of crops. The actual application effect of various crops in various regions proves that the monopotassium phosphate has a plurality of excellent effects of remarkably increasing both production and income, improving quantity and optimizing quality, resisting lodging, resisting diseases and insect pests, preventing and treating premature senility and the like, and has the effect of overcoming the insufficient nutrition caused by the reduction of the aging and absorption capacity of the root system in the later growth period of the crops.
Compound sodium nitrophenolate: has the functions of promoting cell protoplasm flow, improving cell activity, accelerating plant growth and development, promoting root growth and seedling strengthening, protecting flower and fruit, bearing fruit and expanding, improving yield, enhancing stress resistance and the like.
Vinasse: the vinasse is a good organic fertilizer, and can effectively improve weak acid state of soil by mixing the vinasse into the soil, so that small particles of the soil are condensed to improve the granular structure of the soil, and the permeability of fertilizer, water and air of plant roots and the extension of the roots are facilitated.
Biological agent: the function is as follows: the soil fertility is improved, organic and inorganic nutrients in soil are activated, the fertilizer efficiency is improved, the crop circulation is promoted, the long-acting absorption and utilization are realized, and the roots are increased, the seedlings are strengthened and the fruits are full; improving soil, improving soil aggregate structure, eliminating hardening, improving water and fertilizer retention capacity, and resisting drought, stress, cold and lodging; the soil conditioner can be used continuously, and can improve the micro-ecological environment of soil. Eliminate soil hardening, neutralize pH value and reduce heavy metal and salt and alkali toxicity in soil.
Plant growth regulator: a plant growth regulator is a kind of agricultural chemicals for regulating plant growth and development, including artificially synthesized compound and natural plant hormone extracted from organism. Its existence can influence and effectively regulate plant growth
And development, which includes a range of plant life processes from cell growth, division, to rooting, germination, flowering, fruiting, maturation and abscission.
1. Selecting the dosage of the plant growth regulator: the results are shown in Table 1.
TABLE 1
As is clear from Table 1, no plant growth regulator was used, and a disease and insect pest phenomenon occurred. When the using amount is too large, the growth condition of the fruits and vegetables is not obviously improved, so that 10-15 parts of plant growth regulator is preferably selected comprehensively.
The compound fertilizer and the commercial compound fertilizer are applied to a test field with the same soil by taking the commercial compound fertilizer as a control group, and the application amount is the same. The growth of the plants was observed. The results are shown in Table 2.
As can be seen from table 2, the application of the compound fertilizer of the present invention can effectively increase the yield of plants, reduce the amount of fertilizer used, increase the utilization rate of fertilizer, effectively improve soil characteristics, and prevent plant diseases and insect pests.
Compared with the prior art, the invention has the beneficial effects that: the compound fertilizer can meet the requirement of crops on nutrition and can be reasonably proportioned, and the urease inhibitor can inhibit the activity of urease in soil, control the decomposition speed of urea and control the volatilization of ammonia, thereby improving the utilization rate of nitrogen; slowly releases nutrients, improves the utilization rate of the fertilizer, promotes crops to absorb nutrients, enhances the stress resistance of the crops, and reduces soil hardening and environmental pollution caused by fertilizer loss.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The stable long-acting compound fertilizer comprises the following components in parts by weight: 50 parts of coated urea, 10 parts of calcium superphosphate, 5 parts of ammonium chloride, 7 parts of potassium chloride, 10 parts of sweet potato type citric acid residues, 6 parts of vinasse, 3 parts of EDTA chelated zinc, 4 parts of amino acid chelated iron, 10 parts of diethyl aminoethyl hexanoate, 5 parts of urease inhibitor and 6 parts of kaolin.
A preparation method of a stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse by a 60-mesh sieve, uniformly mixing, fermenting for 6 days at 25 ℃, respectively stirring once in the morning and at the evening every day, wherein the stirring time is 18 minutes each time, and the stirring speed is 42 rpm, so as to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) mixing the material 1, urease inhibitor, diethyl aminoethyl hexanoate, urease inhibitor, kaolin and coated urea to obtain a finished product.
Example 2
The stable long-acting compound fertilizer comprises the following components in parts by weight: 130 parts of coated urea, 25 parts of calcium superphosphate, 20 parts of ammonium chloride, 25 parts of potassium chloride, 30 parts of sweet potato type citric acid residues, 30 parts of vinasse, 18 parts of EDTA chelated zinc, 20 parts of amino acid chelated iron, 25 parts of forchlorfenuron, 18 parts of urease inhibitor and 28 parts of talcum powder.
A preparation method of a stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse by a sieve of 80 meshes, uniformly mixing, fermenting for 12 days at 35 ℃, respectively stirring once in the morning and at the evening every day, wherein the stirring time is 35 minutes each time, and the stirring speed is 85 rpm, so as to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) mixing the material 1, forchlorfenuron, a urease inhibitor, talcum powder and coated urea to obtain a finished product.
Example 3
The stable long-acting compound fertilizer comprises the following components in parts by weight: 60 parts of coated urea, 12 parts of calcium superphosphate, 7 parts of ammonium chloride, 9 parts of potassium chloride, 12 parts of sweet potato type citric acid residues, 7 parts of vinasse, 4 parts of EDTA chelated zinc, 5 parts of amino acid chelated iron, 12 parts of naphthylacetic acid sodium salt, 6 parts of urease inhibitor and 7 parts of sodium dodecyl benzene sulfonate.
A preparation method of a stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse with a 62-mesh sieve, uniformly mixing, fermenting for 7 days at 28 ℃, respectively stirring once in the morning and at the evening every day, wherein the stirring time is 19 minutes each time, and the stirring speed is 45 revolutions per minute to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) mixing the material 1, sodium phytate, urease inhibitor, sodium dodecyl benzene sulfonate and coated urea to obtain the finished product.
Example 4
The stable long-acting compound fertilizer comprises the following components in parts by weight: 120 parts of coated urea, 20 parts of calcium superphosphate, 17 parts of ammonium chloride, 20 parts of potassium chloride, 26 parts of sweet potato type citric acid residues, 26 parts of vinasse, 16 parts of EDTA chelated zinc, 16 parts of amino acid chelated iron, 21 parts of diethyl aminoethyl hexanoate, 15 parts of urease inhibitor and 24 parts of sodium stearate.
A preparation method of a stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse by a 65-mesh sieve, uniformly mixing, fermenting for 8 days at 29 ℃, respectively stirring once in the morning and at the evening, wherein the stirring time is 22 minutes each time, and the stirring speed is 45 revolutions per minute to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) mixing the material 1, diethyl aminoethyl hexanoate, urease inhibitor, sodium stearate and coated urea to obtain the finished product.
Example 5
The stable long-acting compound fertilizer comprises the following components in parts by weight: 75 parts of coated urea, 15 parts of calcium superphosphate, 12 parts of ammonium chloride, 15 parts of potassium chloride, 18 parts of sweet potato type citric acid residues, 15 parts of vinasse, 8 parts of EDTA chelated zinc, 11 parts of amino acid chelated iron, 16 parts of naphthylacetic acid sodium salt, 12 parts of urease inhibitor and 14 parts of calcium stearate.
A preparation method of a stable long-acting compound fertilizer is characterized by comprising the following steps,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse by a 70-mesh sieve, uniformly mixing, fermenting for 9 days at 30 ℃, respectively stirring once in the morning and at the evening every day, wherein the stirring time is 25 minutes each time, and the stirring speed is 55 revolutions per minute to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) mixing the material 1, naphthylacetic acid sodium salt, urease inhibitor, calcium stearate and coated urea to obtain the finished product.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The stable long-acting compound fertilizer is characterized by comprising the following components in parts by weight: 50-130 parts of coated urea, 10-25 parts of calcium superphosphate, 5-20 parts of ammonium chloride, 7-25 parts of potassium chloride, 10-30 parts of sweet potato type citric acid residues, 6-30 parts of vinasse, 3-18 parts of EDTA chelated zinc, 4-20 parts of amino acid chelated iron, 10-25 parts of plant growth regulator, 5-18 parts of urease inhibitor and 6-28 parts of anti-caking agent.
2. The stable long-acting compound fertilizer as claimed in claim 1, wherein the compound fertilizer comprises the following components in parts by weight: 60-120 parts of coated urea, 12-20 parts of calcium superphosphate, 7-17 parts of ammonium chloride, 9-20 parts of potassium chloride, 12-26 parts of sweet potato type citric acid residues, 7-26 parts of vinasse, 4-16 parts of EDTA chelated zinc, 5-16 parts of amino acid chelated iron, 12-21 parts of plant growth regulator, 6-15 parts of urease inhibitor and 7-24 parts of anti-caking agent.
3. The stable long-acting compound fertilizer as claimed in claim 1, wherein the mass ratio of the coated material in the coated urea to the urea is 1:2-6, and the coated material is composed of polyvinyl alcohol and polyurethane in the mass ratio of (4-7) to (3-7).
4. The stable long-acting compound fertilizer as claimed in claim 1, wherein the anti-caking agent is an inorganic powder or a surfactant.
5. The stable long-acting compound fertilizer as claimed in claim 1, wherein the inorganic powder is one or more of kaolin, talc, zeolite powder or bentonite, and the surfactant is one or more of sodium dodecylbenzenesulfonate, sodium dodecylsulfate, sodium stearate and calcium stearate.
6. The stable long-acting compound fertilizer as claimed in claim 1, wherein the plant growth regulator is one or more of diethyl aminoethyl hexanoate, forchlorfenuron, cynarin or sodium salt of naphthylacetic acid.
7. The method for preparing a stable long-acting compound fertilizer as claimed in claims 1 to 6, comprising the steps of,
(1) respectively crushing sweet potato residues and vinasse, sieving the crushed sweet potato residues and the vinasse with a sieve of 60-80 meshes, uniformly mixing, fermenting for 6-12 days at 25-35 ℃, stirring once in the morning and at the evening every day, wherein the stirring time is 18-35 minutes each time, and the stirring speed is 42-85 rpm, so as to obtain a material 1;
(2) mixing polyvinyl alcohol and polyurethane, adding the mixture into an organic solvent, continuously stirring the mixture to dissolve the mixture, and heating the mixture to prepare dispersion liquid of the coating material;
(3) spraying the dispersion liquid obtained in the step (2) on the surface of granular urea, and drying to prepare coated urea;
(4) and (3) mixing the material 1, the plant growth regulator, the urease inhibitor, the anti-blocking agent and the coated urea to obtain a finished product.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111848268A (en) * | 2020-06-18 | 2020-10-30 | 嘉施利（平原）化肥有限公司 | Urea slow-release fertilizer and preparation method thereof |
| CN113149762A (en) * | 2021-04-30 | 2021-07-23 | 嘉施利（应城）化肥有限公司 | High-water-solubility compound fertilizer and preparation method thereof |
| CN113149765A (en) * | 2021-05-10 | 2021-07-23 | 嘉施利（应城）化肥有限公司 | Stable long-acting compound fertilizer and preparation method thereof |
| CN113185352A (en) * | 2021-04-29 | 2021-07-30 | 嘉施利（应城）化肥有限公司 | Water-retaining compound fertilizer and preparation method thereof |
| CN113480356A (en) * | 2021-06-29 | 2021-10-08 | 应城市新都化工复合肥有限公司 | Chelated controlled-release compound fertilizer and preparation method thereof |
| CN114560731A (en) * | 2021-05-11 | 2022-05-31 | 河南远见农业科技有限公司 | Composite fertilizer containing diethyl aminoethyl hexanoate and having high yield-increasing, quality-improving and utilization rate and preparation process thereof |
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| CN101050148A (en) * | 2007-05-14 | 2007-10-10 | 中国农业大学 | Controlled fertilizer of polymer capsule, production method, and dedicated capsule material |
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| CN110734340A (en) * | 2019-12-03 | 2020-01-31 | 湖南金信复合肥有限公司 | carbamido organic compound fertilizer and preparation method thereof |
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| CN101050148A (en) * | 2007-05-14 | 2007-10-10 | 中国农业大学 | Controlled fertilizer of polymer capsule, production method, and dedicated capsule material |
| CN104262017A (en) * | 2014-10-10 | 2015-01-07 | 潘虹 | Special compound fertilizer for broomcorn |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111848268A (en) * | 2020-06-18 | 2020-10-30 | 嘉施利（平原）化肥有限公司 | Urea slow-release fertilizer and preparation method thereof |
| CN113185352A (en) * | 2021-04-29 | 2021-07-30 | 嘉施利（应城）化肥有限公司 | Water-retaining compound fertilizer and preparation method thereof |
| CN113149762A (en) * | 2021-04-30 | 2021-07-23 | 嘉施利（应城）化肥有限公司 | High-water-solubility compound fertilizer and preparation method thereof |
| CN113149765A (en) * | 2021-05-10 | 2021-07-23 | 嘉施利（应城）化肥有限公司 | Stable long-acting compound fertilizer and preparation method thereof |
| CN114560731A (en) * | 2021-05-11 | 2022-05-31 | 河南远见农业科技有限公司 | Composite fertilizer containing diethyl aminoethyl hexanoate and having high yield-increasing, quality-improving and utilization rate and preparation process thereof |
| CN113480356A (en) * | 2021-06-29 | 2021-10-08 | 应城市新都化工复合肥有限公司 | Chelated controlled-release compound fertilizer and preparation method thereof |
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Application publication date: 20201103 |