CN117263743A - Special compound fertilizer for corn and preparation method thereof - Google Patents

Special compound fertilizer for corn and preparation method thereof Download PDF

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Publication number
CN117263743A
CN117263743A CN202311282963.0A CN202311282963A CN117263743A CN 117263743 A CN117263743 A CN 117263743A CN 202311282963 A CN202311282963 A CN 202311282963A CN 117263743 A CN117263743 A CN 117263743A
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China
Prior art keywords
parts
corn
compound fertilizer
zinc
fertilizer
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Pending
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CN202311282963.0A
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Chinese (zh)
Inventor
郝秀海
郭顶峰
雒文晋
田丽君
郝润丽
郭转霞
薛士君
降骉
韩笑
张文辉
陈泷
白小东
赵志飞
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Shanxi Liaoyuan Gold Land Science And Technology Co ltd
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Shanxi Liaoyuan Gold Land Science And Technology Co ltd
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Priority to CN202311282963.0A priority Critical patent/CN117263743A/en
Publication of CN117263743A publication Critical patent/CN117263743A/en
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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C21/00—Methods of fertilising, sowing or planting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00—Cultivation of specific crops or plants not otherwise provided for
    • A01G22/20—Cereals
    • 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
    • C05G3/40—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
    • C05G3/80—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
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/10—Solid or semi-solid fertilisers, e.g. powders
    • C05G5/12—Granules or flakes

Abstract

The application relates to the technical field of compound fertilizers special for crops, and particularly discloses a compound fertilizer special for corn and a preparation method thereof. A special compound fertilizer for corn comprises the following raw materials in parts by weight: 15-20 parts of urea, 8-10 parts of ammonium sulfate, 20-30 parts of potassium sulfate, 5-10 parts of diammonium phosphate, 5-10 parts of negative potential powder and 1-3 parts of a compound zinc additive; the compound zinc additive is a mixture of citric acid chelated zinc and amino acid; the mass ratio of the citric acid chelated zinc to the amino acid is 1: (1-2). The corn plant height obtained by the application is 235-236cm, the maximum single spike quantity, spike length, spike grain number and mu yield are respectively 0.256kg, 22.49cm, 510 grains and 608.4kg, and the growth vigor and the yield of the corn plant are improved, so that the fertilizer utilization rate of the compound fertilizer is improved.

Description

Special compound fertilizer for corn and preparation method thereof
Technical Field
The application relates to the technical field of compound fertilizers special for crops, in particular to a compound fertilizer special for corn and a preparation method thereof.
Background
Corn is an important grain crop and economic crop in China, the yield and the planting area are inferior to those of rice and wheat, and the third place in the world, and scientific and reasonable fertilization is an important aspect of high quality, high yield and high efficiency development of corn production.
The corn has mineral elements required to be absorbed by the growth and development of the corn up to 20, and mainly contains three major elements of nitrogen, phosphorus and potassium, major elements of sulfur, calcium and magnesium and trace elements of iron, manganese, boron, copper, zinc and sodium. Urea is a high-quality nitrogenous fertilizer with high nitrogen content, quick fertilizer efficiency and large dosage, but after nitrogenous fertilizer is applied to corn, the fertilizer is easy to run off through the ways of volatilization, leaching, decomposition, runoff and the like, so that the utilization rate of the fertilizer is not high, and the utilization rate is only about 30 percent according to statistics.
Disclosure of Invention
In order to improve the fertilizer utilization rate of the special compound fertilizer for corn, the application provides the special compound fertilizer for corn and a preparation method thereof.
In a first aspect, the present application provides a compound fertilizer special for corn, which adopts the following technical scheme:
a special compound fertilizer for corn comprises the following raw materials in parts by weight: 15-20 parts of urea, 8-10 parts of ammonium sulfate, 20-30 parts of potassium sulfate, 5-10 parts of diammonium phosphate, 5-10 parts of negative potential powder and 1-3 parts of a compound zinc additive; the compound zinc additive is a mixture of citric acid chelated zinc and amino acid; the mass ratio of the citric acid chelated zinc to the amino acid is 1: (1-2).
The special compound fertilizer for corn can select 15-20 parts of urea, 8-10 parts of ammonium sulfate, 20-30 parts of potassium sulfate, 5-10 parts of diammonium phosphate, 5-10 parts of negative potential powder and 1-3 parts of compound zinc additive, can select any value in the respective range, and can improve the fertilizer utilization rate of the special compound fertilizer for corn.
By adopting the technical scheme, the compound zinc additive is a mixture of citric acid chelated zinc and amino acid, the zinc activity of the citric acid chelated zinc is high, zinc element absorption by plants is facilitated, in addition, zinc ions can form a complex with citric acid and amino acid by mixing the citric acid chelated zinc and the amino acid, the stability and the utilization rate of the zinc ions are improved, the obtained compound zinc additive is not influenced by soil pH and microorganisms, and long-acting zinc nutrition is improved for plants; the mass ratio of the citric acid chelated zinc to the amino acid is regulated, so that the absorption and utilization of zinc element in the compound fertilizer by corn can be further improved.
Urea is a nitrogen fertilizer with highest nitrogen content at present, is used as a neutral fertilizer, is suitable for corn, is easy to store and convenient to use, hardly contains residues after application, has small damage to soil, and is a chemical nitrogen fertilizer with larger use amount at present. The ammonium sulfate can replace part of urea to be added to supplement nitrogen, is not easy to absorb moisture and is easy to dissolve in water, and the fertilizer efficiency is quick and stable. Potassium sulfate can properly supplement chloride ions and potassium elements, promote the growth and development of corn, especially promote the root development of corn, and can improve the nutrient absorption capacity of corn; in addition, the starch content can be increased, the stress resistance of corn can be improved, and the content can be improved. The diammonium phosphate is easy to dissolve in water, and can be quickly dissolved and permeated into the corn root when meeting water, so that the effect of quickly supplying nutrients to corn seedlings is achieved, and phosphorus elements are supplemented. The negative potential powder enters the soil to act with mineral matters in the soil, so that the mineral matters are attracted to enter the periphery of the corn root system, and the corn root system is facilitated to absorb the mineral matters.
As preferable: a special compound fertilizer for corn comprises the following raw materials in parts by weight: 16-18 parts of urea, 8.5-9.5 parts of ammonium sulfate, 24-28 parts of potassium sulfate, 7-9 parts of diammonium phosphate, 7-9 parts of negative potential powder and 1.5-2.5 parts of compound zinc additive.
The special compound fertilizer for corn can select 16-18 parts of urea, 8.5-9.5 parts of ammonium sulfate, 24-28 parts of potassium sulfate, 7-9 parts of diammonium phosphate, 7-9 parts of negative potential powder and 1.5-2.5 parts of compound zinc additive, can select any value within the respective range, and can improve the fertilizer utilization rate of the special compound fertilizer for corn.
As preferable: the composite zinc additive is prepared by bacterial liquid coating, and specifically comprises the following components:
preparing bacterial liquid: adding bacillus subtilis and white sugar into distilled water, mixing, and uniformly stirring to obtain bacterial liquid;
coating: preheating the composite zinc additive to 50-60 ℃, adding bacterial liquid, and coating to obtain a coated composite zinc additive;
the mass ratio of the bacillus subtilis to the white sugar to the distilled water is 1: (1-2): (8-10).
By adopting the technical scheme, bacillus and white sugar are added into distilled water and mixed to obtain bacterial liquid with adhesive force, the bacterial liquid and the compound zinc additive are mixed and preheated, the coating effect can be improved, and then the bacterial liquid is coated on the surface of the compound zinc additive by using a coating machine, so that the effect of the compound zinc additive is prolonged, and the absorption of crops to the compound fertilizer is promoted.
As preferable: the mass ratio of the composite zinc additive to the composite microbial inoculum is 1: (3-5).
By adopting the technical scheme, the mass ratio of the composite zinc additive to the composite microbial inoculum is adjusted, and the coating effect of the composite zinc additive is improved, so that the effect of the composite zinc additive is prolonged.
As preferable: the composite zinc additive further comprises polyaspartic acid.
By adopting the technical scheme, the polyaspartic acid can promote the absorption of nutrient elements by plants, promote the growth of root systems, increase the yield, strengthen plants, strengthen stress resistance and further improve the utilization rate of fertilizer; meanwhile, the polyaspartic acid has the characteristics of no hormone, no toxicity and no residue, and is more suitable for being applied as a compound fertilizer.
As preferable: the mass ratio of the citric acid chelated zinc to the amino acid to the polyaspartic acid is 1 (1-2) to 2-3.
By adopting the technical scheme, the mass ratio of the citric acid chelated zinc, the amino acid and the polyaspartic acid is adjusted, so that the absorption of plants to zinc element can be further promoted, and the fertilizer utilization rate of the compound fertilizer is never improved.
As preferable: the compound fertilizer also comprises the following raw materials in parts by weight: 1-3 parts of fulvic acid and 5-8 parts of chitosan.
By adopting the technical scheme, the fulvic acid is added as a soil improvement component, contains functional groups such as carboxyl, phenolic hydroxyl and the like, has stronger complexing, chelating and surface adsorption capacities, can reduce the loss of ammonium nitrogen, increases the moving distance of phosphorus in soil, inhibits the fixation of water-soluble phosphorus by the soil, converts ineffective phosphorus into effective phosphorus, promotes the absorption of phosphorus by a root system, absorbs and stores potassium ions, and improves the content of quick-acting potassium. The chitosan is added as an inorganic release component, and the utilization rate of the fertilizer can be further improved by slowly releasing the fulvic acid.
As preferable: the mass ratio of the fulvic acid to the chitosan is 1: (2-6).
By adopting the technical scheme, the mass ratio of the fulvic acid to the chitosan is adjusted, so that the fertilizer utilization rate of the compound fertilizer can be further improved.
In a second aspect, the present application provides a method for preparing a compound fertilizer dedicated for corn according to any one of the above.
The preparation method of the special compound fertilizer for corn comprises the following operation steps: mixing the raw materials, stirring uniformly, granulating, drying, cooling, sieving, and packaging to obtain the special compound fertilizer for corn.
In a third aspect, the application provides an application of the special compound fertilizer for corn in corn.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) According to the method, the variety and the doping amount of each raw material in the compound fertilizer are controlled, so that the single-spike amount, the spike length, the spike grain number and the mu yield of corn are respectively 0.241kg, 22.30cm, 493 grains and 593.1kg, the growth vigor and the yield of corn plants are improved, and the fertilizer utilization rate of the compound fertilizer is improved.
(2) According to the method, the composite zinc additive is coated, the mass ratio of the composite zinc additive to the bacterial liquid is regulated, so that the single ear quantity, the ear length, the ear grain number and the mu yield of corn are respectively 0.244-0.251kg, 22.35-22.41cm, 501-504 grains and 595.1-599.2kg, the growth vigor and the yield of corn plants are improved, and the fertilizer utilization rate of the composite fertilizer is further improved.
(3) According to the method, the potassium polyaspartate is added into the composite zinc additive, and the mass ratio of the citric acid chelated zinc, the amino acid and the potassium polyaspartate is adjusted, so that the corn spike quantity, the corn spike length, the corn spike grain number and the corn mu yield are respectively 0.255-0.256kg, 22.45-22.49cm, 508-510 grains and 605.7-608.4kg, the growth vigor and the yield of corn plants are improved, and the fertilizer utilization rate of the composite fertilizer is further improved.
(4) According to the method, the fulvic acid and the chitosan are added into the compound fertilizer raw material, and the mass ratio of the fulvic acid to the chitosan is regulated, so that the single ear quantity, the ear length, the ear grain number and the mu yield of corn are respectively 0.259-0.261kg, 22.53-22.55cm, 512-515 grains and 610.2-617.5kg, the growth vigor and the yield of corn plants are improved, and the fertilizer utilization rate of the compound fertilizer is further improved.
Detailed Description
The present application is described in further detail below in connection with specific examples.
The following raw materials are all commercial products, and are fully disclosed in the present application, and should not be construed as limiting the sources of the raw materials. The method comprises the following steps: urea with total nitrogen content not less than 46.4%; ammonium sulfate with 100 meshes of particle size and 80% of active substance content; potassium sulfate with a particle size of 80 meshes; diammonium phosphate with an effective phosphorus content of 64%; negative potential powder with the particle size of 1250 meshes; zinc chelate by citric acid, wherein the content of zinc element is more than or equal to 22%; amino acid, the content of active ingredients is 99%; bacillus subtilis, enzyme activity 1000 hundred million U/g; potassium polyaspartate, 20% of active substance; fulvic acid, enzyme activity 20 hundred million U/g; the chitosan has an effective substance content of 90%.
The following is a preparation example of the composite zinc additive
Preparation example 1
The composite zinc additive of preparation example 1 is prepared by the following operation steps:
preparing bacterial liquid: adding 1kg of bacillus subtilis and 1.5kg of white sugar into 9L of distilled water, mixing, and uniformly stirring to obtain bacterial liquid; coating: preheating 1kg of the composite zinc additive to 50-60 ℃, adding 2.5kg of bacterial liquid, and coating to obtain the coated composite zinc additive.
PREPARATION EXAMPLES 2 to 5
The preparation method of the composite zinc additive of preparation examples 2-5 is the same as preparation example 1, except that the bacterial liquid dosage is 3kg, 4kg, 5kg and 5.5kg respectively, and the types and the doping amounts of the other raw materials are the same as preparation example 1.
Example 1
The special compound fertilizer for corn of the example 1 is prepared by the following preparation method:
according to the blending amount of the table 1, the raw materials are mixed, stirred uniformly, granulated, dried, cooled, screened and packaged to obtain the special compound fertilizer for corn.
Examples 2 to 3
The preparation method of the special compound fertilizer for corn of examples 2-3 is the same as example 1, except that the blending amount of each raw material is different, and the specific details are shown in table 1.
TABLE 1 examples 1-3 blend amount (kg) of raw materials of composite fertilizer for corn
Examples 4 to 5
The preparation method of the special compound fertilizer for corn of examples 4-5 is the same as that of example 2, except that the blending amount of each raw material is different, and the specific details are shown in table 2.
TABLE 2 mixing amount (kg) of raw materials of the compound fertilizer for corn of examples 4-5
Examples 6 to 10
The preparation method of the special compound fertilizer for corn of examples 6-10 is the same as example 4, except that the compound zinc additive prepared in preparation examples 1-5 is selected as the compound zinc additive, and the types and the blending amounts of the other raw materials are the same as example 4.
Example 11
The preparation method of the corn special compound fertilizer of the example 11 is the same as the example 8, except that the compound zinc additive further comprises 0.7kg of potassium polyaspartate, and the types and the blending amounts of the other raw materials are the same as the example 8.
Examples 12 to 15
The preparation method of the compound fertilizers of examples 12-15 is the same as that of example 11, except that the doping amounts of the polyaspartic acid potassium in the compound zinc additive are 1.4kg, 1.75kg, 2.1kg and 2.8kg, respectively, and the types and doping amounts of the other raw materials are the same as those of example 6.
Examples 16 to 20
The preparation method of the special compound fertilizer for corn of examples 16-20 is the same as example 13, except that the compound fertilizer also comprises fulvic acid and chitosan, and the specific blending amount is shown in Table 3.
TABLE 3 amounts of raw materials (kg) of the Compound fertilizers for corn of examples 16 to 20
Comparative example 1
The preparation method of the compound fertilizer special for corn of comparative example 1 is the same as that of example 1, except that no compound zinc additive is added to the compound fertilizer, and the types and blending amounts of the other raw materials are the same as those of example 1.
Comparative example 2
The preparation method of the compound fertilizer special for corn of comparative example 2 is the same as in example 1, except that potassium sulfate is not added, and the types and blending amounts of the other raw materials are the same as in example 1.
Comparative example 3
The preparation method of the corn special compound fertilizer of comparative example 3 is the same as that of example 1, except that zinc citrate chelate is replaced with zinc EDTA chelate in the same amount, and the types and blending amounts of the other raw materials are the same as those of example 1.
The following is an example of application of the compound fertilizer in corn
Application example 1
Application example 1 the application method of the compound fertilizer in corn specifically comprises the following steps: selecting land parcels with flat land features and even labor consumption, wherein the organic matters are 1.7g/kg, the total nitrogen is 1.2g/kg, the available phosphorus is 16mg/kg, the quick-acting potassium is 152mg/kg, and the pH value is 8.3. The planting area is 50m 2 Sowing varieties: zhengdan 958; sowing quantity: 2.5 kg/mu; row spacing: 30 cm. Times.60 cm,1 seedling/hole. The compound fertilizer obtained in example 1 was applied in the jointing period, 50 kg per mu.
Application examples 2 to 20
Application examples 2-20 the method of application of the compound fertilizer in corn was different from application example 1 in that the compound fertilizer applied in the jointing period was the compound fertilizer obtained in examples 2-20, respectively, and the rest was the same as in application example 1.
Comparative examples 1 to 3 were used
The application method of the compound fertilizer of the comparative examples 1-3 in corns is different from the application example 1 in that the compound fertilizer applied in the jointing period is the compound fertilizer obtained in the comparative examples 1-2 respectively, and the rest of the operations are the same as the application example 1.
Performance detection
The corn obtained in each of application examples 1 to 20 and comparative examples 1 to 3 was subjected to performance test, and the test results are shown in Table 4.
TABLE 4 Performance test results for different corn
The test results in Table 4 show that the corn plant height obtained by applying the method is 235-236cm, the maximum single-spike quantity, spike length, spike grain number and mu yield are respectively 0.256kg, 22.49cm, 510 grains and 608.4kg, and the growth vigor and yield of the corn plant are improved, so that the fertilizer utilization rate of the compound fertilizer is improved.
As can be seen by combining the performance detection data of the corns in application examples 1-3, the single spike quantity, spike length, spike grain number and mu yield of the corns in application example 2 are respectively 0.237kg, 22.28cm, 490 grains and 591.4kg, which are higher than those in application examples 1 and 3, the doping quantity of the composite zinc additive in the composite fertilizer in the embodiment example 2 is proper, and the growth vigor and yield of corn plants are improved, so that the fertilizer utilization rate of the composite fertilizer is improved. The zinc chelating agent is prepared from citric acid chelated zinc and amino acid, wherein the citric acid chelated zinc has high zinc activity and is more beneficial to plants to absorb zinc elements; the mass ratio of the citric acid chelated zinc to the amino acid is regulated, so that the absorption and utilization of zinc element in the compound fertilizer by corn can be further improved.
As can be seen by combining the performance detection data of the corns in application examples 2 and 4-5, the corn in application example 4 has the advantages that the single spike quantity, the spike length, the spike grain number and the mu yield of 0.241kg, 22.30cm, 493 grains and 593.1kg respectively are higher than those in application examples 2 and 5, and the quality ratio of the citric acid chelated zinc to the amino acid in the compound fertilizer is 1:1, so that the growth condition and the yield of corn plants are improved, and the fertilizer utilization rate of the compound fertilizer is improved. Probably because the mass ratio of the citric acid chelated zinc to the amino acid is adjusted, the absorption and utilization of zinc element in the compound fertilizer by corn can be further improved.
As can be seen by combining the performance detection data of the corns in application examples 6-10, the single spike quantity, spike length, spike grain number and mu yield of the corns in application examples 7-9 are respectively 0.244-251kg, 22.35-22.41cm, 501-504 grains and 595.1-599.2kg, which are higher than those in application examples 6 and 10, the mass ratio of the composite zinc additive to the bacterial liquid in the coating process of the composite zinc additive is 1: (3-5) is more suitable, probably because the mass ratio of the composite zinc additive to the composite microbial inoculum is adjusted, the coating effect of the composite zinc additive is improved, and the effect of the composite zinc additive is prolonged.
As can be seen by combining the performance detection data of the corns in application examples 11-15, the single spike quantity, spike length, spike grain number and mu yield of the corns in application examples 12-14 are respectively 0.255-0.256kg, 22.45-22.49cm, 508-510 grains and 605.7-608.4kg, which are higher than those in application examples 11 and 15, the mass ratio of the citric acid chelated zinc, the amino acid and the potassium polyaspartate in the compound fertilizer is 1 (1-2), and the ratio of the citric acid chelated zinc, the amino acid and the potassium polyaspartate is (2-3) is proper, and the polyaspartic acid can possibly promote the absorption of plants to nutrient elements, promote the growth of root systems, increase the yield, strengthen plants, strengthen stress resistance and further improve the fertilizer utilization rate; meanwhile, the polyaspartic acid has the characteristics of no hormone, no toxicity and no residue, and is more suitable for being applied as a compound fertilizer.
As can be seen by combining the performance detection data of the corns in application examples 16-20, the corn in application examples 17-19 has a single spike quantity, spike length, spike grain number and mu yield of 0.259-261kg, 22.53-22.55cm, 512-515 grains and 610.2-617.5kg respectively, which are higher than those in application examples 16 and 20, and the mass ratio of fulvic acid to chitosan is 1: (2-6) is more suitable, probably because the mass ratio of fulvic acid to chitosan is adjusted, and the fertilizer utilization rate of the compound fertilizer can be further improved.
In addition, by combining the performance detection data of the corns in comparative examples 1-3 and example 1, the fertilizer utilization rate of the compound fertilizer can be improved to different degrees by adding the compound zinc additive, the potassium sulfate and the citric acid chelated zinc into the corn compound fertilizer raw material.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The special compound fertilizer for corn is characterized by comprising the following raw materials in parts by weight: 15-20 parts of urea, 8-10 parts of ammonium sulfate, 20-30 parts of potassium sulfate, 5-10 parts of diammonium phosphate, 5-10 parts of negative potential powder and 1-3 parts of a compound zinc additive; the compound zinc additive is a mixture of citric acid chelated zinc and amino acid; the mass ratio of the citric acid chelated zinc to the amino acid is 1: (1-2).
2. The special compound fertilizer for corn as set forth in claim 1, which is characterized by comprising the following raw materials in parts by weight: 16-18 parts of urea, 8.5-9.5 parts of ammonium sulfate, 24-28 parts of potassium sulfate, 7-9 parts of diammonium phosphate, 7-9 parts of negative potential powder and 1.5-2.5 parts of compound zinc additive.
3. The special compound fertilizer for corn according to claim 1, wherein the compound zinc additive is prepared by bacterial liquid coating, and specifically comprises the following components:
preparing bacterial liquid: adding bacillus subtilis and white sugar into distilled water, mixing, and uniformly stirring to obtain bacterial liquid;
coating: preheating the composite zinc additive to 50-60 ℃, adding bacterial liquid, and coating to obtain a coated composite zinc additive;
the mass ratio of the bacillus subtilis to the white sugar to the distilled water is 1: (1-2): (8-10).
4. A corn-specific compound fertilizer as defined in claim 3, characterized in that: the mass ratio of the composite zinc additive to the bacterial liquid is 1: (3-5).
5. The corn-specific compound fertilizer of claim 1, wherein the compound zinc additive further comprises potassium polyaspartate.
6. The special compound fertilizer for corn according to claim 5, wherein: the mass ratio of the citric acid chelated zinc to the amino acid to the polyaspartic acid potassium is 1 (1-2) to 2-3.
7. The special compound fertilizer for corn according to claim 1, wherein: the compound fertilizer also comprises the following raw materials in parts by weight: 1-3 parts of fulvic acid and 5-8 parts of chitosan.
8. The special compound fertilizer for corn according to claim 7, wherein the mass ratio of fulvic acid to chitosan is 1: (2-6).
9. A method for preparing the special compound fertilizer for corn according to any one of claims 1 to 8, which is characterized by comprising the following operation steps: mixing the raw materials, stirring uniformly, granulating, drying, cooling, sieving, and packaging to obtain the special compound fertilizer for corn.
10. Use of a special compound fertilizer for corn according to any one of claims 1-8 in corn.
CN202311282963.0A 2023-10-07 2023-10-07 Special compound fertilizer for corn and preparation method thereof Pending CN117263743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311282963.0A CN117263743A (en) 2023-10-07 2023-10-07 Special compound fertilizer for corn and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311282963.0A CN117263743A (en) 2023-10-07 2023-10-07 Special compound fertilizer for corn and preparation method thereof

Publications (1)

Publication Number Publication Date
CN117263743A true CN117263743A (en) 2023-12-22

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Application Number Title Priority Date Filing Date
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