CN111233560A - Fertilizer loss control agent and preparation method thereof, energy-gathering loss control fertilizer and preparation method thereof - Google Patents
Fertilizer loss control agent and preparation method thereof, energy-gathering loss control fertilizer and preparation method thereof Download PDFInfo
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- CN111233560A CN111233560A CN202010212383.4A CN202010212383A CN111233560A CN 111233560 A CN111233560 A CN 111233560A CN 202010212383 A CN202010212383 A CN 202010212383A CN 111233560 A CN111233560 A CN 111233560A
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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
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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
- C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
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Abstract
The invention relates to the technical field of fertilizer production, and discloses a fertilizer loss control agent, which comprises the following raw materials: natural silicate powder, silica sol and biological compound amino acid. A preparation method of a fertilizer loss control agent comprises the following steps: (1) preparing natural silicate powder; (2) preparing silica sol; (3) preparing the fertilizer loss control agent. An energy-gathering loss-control fertilizer comprises the following raw materials: fertilizers and fertilizer loss control agents. A preparation method of energy-gathering loss-control fertilizer comprises the following steps: (1) mixing a fertilizer and a fertilizer loss control agent; (2) granulating by using an extrusion method; (3) screening out fertilizer particles with the particle size within the range of 1.5-4 mm; (4) polishing to obtain the energy-gathering loss-control fertilizer. The invention prepares the fertilizer loss control agent with stronger slow release performance by simple raw material proportion and corresponding preparation process, and the energy-gathering loss control fertilizer which uses the fertilizer loss control agent and has low cost, good slow release effect, wide application range and environmental protection.
Description
Technical Field
The invention relates to the technical field of fertilizer production, in particular to a fertilizer loss control agent and a preparation method thereof, and an energy-gathering loss control fertilizer and a preparation method thereof.
Background
The fertilizer is a substance which can supply nutrients required by the growth and development of crops, improve the soil properties and improve the yield and quality of the crops, and is one of the material bases of agricultural production; generally, the fertilizer is divided into organic fertilizer, inorganic fertilizer and biological fertilizer.
The slow release fertilizer refers to a fertilizer with the release rate of chemical substance nutrients far less than the release rate of the quick soluble fertilizer which is converted into the effective state nutrients of plants after being applied to soil; the slow release fertilizer can effectively improve the utilization rate of fertilizer nutrients, reduce the fertilization times and increase the yield.
The prior slow release fertilizer comprises the following types: organic polymer coated fertilizers (thermoplastic and resin type), such slow release fertilizers are costly and not environmentally friendly; inorganic coated fertilizers (such as sulfur and mineral coatings) have poor slow release effect; slightly soluble organic nitrogen compounds (such as urea formaldehyde and other urea formaldehyde condensates) are only urea fertilizers, and the application range is narrow; slightly soluble inorganic compounds (such as metal ammonium phosphate and partially acidified phosphate), the slow release fertilizer can over-acidify the soil and cause soil acid pollution.
Therefore, the slow release fertilizer which is low in cost, good in slow release effect, wide in application range and environment-friendly is prepared.
Disclosure of Invention
The first purpose of the invention is to provide a fertilizer loss control agent which can be combined with a fertilizer, so that the fertilizer effectively improves the slow release performance; the second purpose of the invention is to provide a preparation method of the fertilizer loss control agent, which can efficiently prepare the efficient fertilizer loss control agent; the third purpose of the invention is to provide an energy-gathering loss-control fertilizer, which is prepared into a high-efficiency slow-release fertilizer by a fertilizer loss-control agent; the fourth purpose of the invention is to provide a preparation method of energy-gathering loss-control fertilizer, which can prepare effective slow-release fertilizer; the fertilizer loss control agent with stronger slow release performance and the energy-gathering loss control fertilizer which uses the fertilizer loss control agent and has the advantages of low cost, good slow release effect, wide application range and environmental protection are prepared by simple raw material proportion and corresponding preparation process.
The embodiment of the invention is realized by the following steps:
a fertilizer loss control agent comprises the following raw materials in percentage by weight: 85-93% of natural silicate powder, 5-10% of silica sol and 2-5% of biological compound amino acid.
The natural silicate powder has a tetrahedral structure; the silica sol is colloidal and has strong adhesiveness; the silica sol adheres all tetrahedral structures of the natural silicate powder together to form a three-dimensional frame structure; the amino acids in the biological compound amino acid can form peptide bonds for connection when meeting water, thereby forming a certain chain structure and being combined with a three-dimensional frame network structure formed by combining tetrahedrons to form a larger three-dimensional porous frame network structure; the net structure formed by the natural silicate powder and the compound amino acid can well wrap the fertilizer, so that the fertilizer can slowly release nutrients, and the loss of the nutrients of the fertilizer is controlled.
The natural silicate powder, the silica sol and the compound amino acid are all raw materials which are obtained from solution and have lower cost; and the natural silicate powder and the compound amino acid are nutrients required by plants, can be absorbed and utilized by the plants, are friendly to the environment and the plants, and have high environmental protection.
Further, the natural silicate powder comprises the following components: feldspar powder and silica powder; the proportion of the feldspar powder to the silica powder is 3-3.5: 1.
The feldspar powder has a silicon-oxygen tetrahedron or aluminum-supported tetrahedron structure, and the silica powder has a silicon-oxygen tetrahedron structure; the feldspar belongs to framework silicates, four oxygen ions of all tetrahedrons of the framework silicates are shared by other tetrahedrons, namely the feldspar has a net structure, and the feldspar and the silica powder are proportioned according to the proportion, so that a complete and tough three-dimensional porous framework network structure can be formed.
Further, the silica sol is alkaline silica sol with the pH value of 10.5-11.5; the silica sol is prepared by using the following raw materials: liquid sodium silicate, triethanolamine and sulfuric acid.
The existing fertilizers are generally acidic, soil is seriously acidified after the acidic fertilizers are applied, the acidified soil can aggravate soil hardening, the root system of a plant is poor in development, the growth vigor of the plant is weakened, the disease resistance is reduced, and the plant is easy to be infected by viruses; this application uses the silica sol of basicity to avoid causing the acidizing to soil, has the feature of environmental protection to soil.
A preparation method of a fertilizer loss control agent comprises the following steps:
(1) preparing natural silicate powder: grinding natural silicate into powder to prepare natural silicate powder;
(2) preparing silica sol: adding triethanolamine into 10% industrial sulfuric acid, and stirring; adding liquid sodium silicate into deionized water, and stirring until the liquid sodium silicate is completely dissolved to prepare a sodium silicate solution; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to obtain silica sol;
(3) preparing a fertilizer loss control agent: weighing the natural silicate powder prepared in the step (1), the silica sol prepared in the step (2) and the biological compound amino acid according to the proportion, and uniformly mixing to prepare the fertilizer loss control agent.
Adding sulfuric acid solution containing triethanolamine into sodium silicate solution, and reacting silicate ions with hydrogen ions to generate silica sol.
The triethanolamine has hydroxyl which has stronger hydrophilicity, so that the triethanolamine has stronger water absorption and can effectively improve the water retention of soil; hydroxyl of the triethanolamine can be condensed with carboxyl of amino acid to form peptide bond connection, so that the triethanolamine and the amino acid form a chain structure, and can be combined with a three-dimensional frame network structure formed by combining tetrahedrons to form a larger three-dimensional porous frame network structure; the triethanolamine continuously and slowly absorbs water to continuously and slowly dissolve nutrient ions of the fertilizer, so that the fertilizer nutrients are continuously and slowly released, and the effects of controlling the fertilizer nutrient loss and improving the fertilizer nutrient utilization rate are achieved.
Furthermore, in the step (1), the natural silicate is firstly ground into 200-mesh powder, and then shearing is carried out through 20000 r/min.
The natural silicate forms nano-level powder, so that the tetrahedral structure of the natural silicate is combined to form a three-dimensional frame structure when the natural silicate reacts with silica sol.
Further, the proportion of the 10% industrial sulfuric acid to the triethanolamine in the step (2) is 20: 1-3; the proportion of the liquid sodium silicate to the water is 1: 6-9; na of said liquid sodium silicate2SiO3The content of the sodium silicate is 53.30-55.05%, and the modulus of the liquid sodium silicate is 3.2-3.6.
The liquid sodium silicate and the sulfuric acid solution containing triethanolamine which meet the conditions are selected, so that the silica sol meeting the conditions can be conveniently prepared.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99-99.5% of fertilizer and 0.5-1% of fertilizer loss control agent.
Further, the fertilizer is a compound fertilizer consisting of a plurality of nitrogen fertilizers, potassium fertilizers, phosphorus fertilizers, trace element fertilizers and rare earth element fertilizers.
The fertilizer loss control agent can be mixed with various types of basic fertilizers and compound fertilizers for use, and has the advantages of wide application range, and simple and convenient use.
A preparation method of energy-gathering loss-control fertilizer comprises the following steps:
(1) fully mixing the fertilizer and the fertilizer loss control agent according to the proportion;
(2) granulating by using an extrusion method to prepare fertilizer granules;
(3) screening out fertilizer particles with the particle size within the range of 1.5-4 mm;
(4) polishing the screened fertilizer particles to prepare the energy-gathering loss-control fertilizer.
The extrusion granulator is used for granulation, the extrusion granulator is used for dry granulation for agglomerating solid materials by using pressure, the dry granulation can avoid a drying process, and silica sol is easy to lose adhesiveness at high temperature to damage a three-dimensional frame structure, so that the loss of the efficacy of the fertilizer loss control agent caused by the damage of the high temperature to the fertilizer loss control agent is avoided.
Has the advantages that:
the invention prepares a fertilizer loss control agent by simple, low-cost and environment-friendly raw materials, and prepares energy-gathering loss control fertilizer by using the fertilizer loss control agent, the fertilizer loss control agent can form a net structure to wrap the fertilizer, the energy-gathering loss control fertilizer is applied into soil to form a three-dimensional porous wiener network structure when meeting water, and a huge interpenetrating network is formed by the combined action of polyplinic silicon-magnesium, ammonium root and viscous force with changed crystal structure, so that fertilizer nutrients are attached around the network structure and are gathered on a soil plough layer, and fertilizer efficiency and moisture are maintained to form a water-fertilizer coupling body, thereby reducing the migration rate of moisture and fertilizer nutrients, reducing the total loss of moisture and fertilizer nutrients, and achieving the effects of controlling the fertilizer nutrient flow and improving the fertilizer utilization rate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following provides a fertilizer loss control agent, an energy-gathering loss control fertilizer using the fertilizer loss control agent, and a preparation method thereof.
Example 1
In this embodiment, the fertilizer loss control agent comprises the following raw materials in percentage by weight: 85% of natural silicate powder, including feldspar powder and silica powder with the proportion of 3:1, 10% of silica sol with the pH value of 10.5 and 5% of biological compound amino acid.
A preparation method of a fertilizer loss control agent comprises the following steps:
(1) preparing natural silicate powder: grinding natural silicate into 200-mesh powder, and shearing at 20000r/min to obtain natural silicate powder;
(2) preparing silica sol: adding triethanolamine into 10% industrial sulfuric acid at a ratio of 20:1 in parts by weight, and uniformly stirring; adding liquid sodium silicate into deionized water according to the proportion of 6:1, wherein Na of the liquid sodium silicate2SiO353.30 percent of the content and 3.2 of the modulus, and stirring the mixture until the mixture is completely dissolved to prepare a sodium silicate solution; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to 10.5 to obtain silica sol;
(3) preparing a fertilizer loss control agent: and (3) adding the natural silicate powder and the silica sol into the biological compound amino acid according to the proportion, and uniformly mixing to prepare the fertilizer loss control agent.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99% of compound fertilizer and 1% of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer comprises the following steps:
(1) fully mixing the fertilizer and the fertilizer loss control agent according to the proportion;
(2) granulating by using an extrusion method to prepare fertilizer granules;
(3) screening out fertilizer particles with the particle size of 1.5-4 mm;
(4) polishing the screened fertilizer particles to prepare the energy-gathering loss-control fertilizer.
Example 2
In this embodiment, the fertilizer loss control agent comprises the following raw materials in percentage by weight: 93 percent of natural silicate powder, which comprises feldspar powder and silica powder with the proportion of 3.5:1, 5 percent of silica sol with the pH value of 10.6 and 2 percent of biological compound amino acid.
A preparation method of a fertilizer loss control agent, which is different from the preparation method of example 1 in that:
(1) adding triethanolamine into 10% industrial sulfuric acid according to the parts by weight of 20:2, and uniformly stirring; adding liquid sodium silicate into deionized water according to the proportion of 7:1, wherein Na of the liquid sodium silicate2SiO3The content is 54 percent, the modulus is 3.4, and the sodium silicate solution is prepared after stirring until the sodium silicate solution is completely dissolved; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to be 10.6 to obtain the silica sol.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99.2 percent of compound fertilizer and 0.8 percent of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer, which is the same as the preparation method of the embodiment 1.
Example 3
In this embodiment, the fertilizer loss control agent comprises the following raw materials in percentage by weight: 90% of natural silicate powder, which comprises feldspar powder and silica powder with the proportion of 3.2:1, 7% of sol silicic acid with the pH value of 11.5 and 3% of biological compound amino acid.
A preparation method of a fertilizer loss control agent, which is different from the preparation method of example 1 in that:
(1) at 10%Adding triethanolamine into the industrial sulfuric acid according to the proportion of 20:3, and uniformly stirring; adding liquid sodium silicate, Na of which is added into deionized water according to the proportion of 8:12SiO3The content is 53.5 percent, the modulus is 3.5, and the sodium silicate solution is prepared after stirring until the sodium silicate solution is completely dissolved; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to 11.5 to obtain the silica sol.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99.5 percent of compound fertilizer and 0.5 percent of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer, which is the same as the preparation method of the embodiment 1.
Example 4
In this embodiment, the fertilizer loss control agent comprises the following raw materials in percentage by weight: 88% of natural silicate powder, which comprises feldspar powder and silica powder with the proportion of 3.3:1, 9% of silica sol with the pH value of 11 and 3% of biological compound amino acid.
A preparation method of a fertilizer loss control agent, which is different from the preparation method of example 1 in that:
(1) adding triethanolamine into 10% industrial sulfuric acid at a ratio of 20:1.5 in parts by weight, and uniformly stirring; adding liquid sodium silicate into deionized water according to the proportion of 6:1, wherein Na of the liquid sodium silicate2SiO3The content is 54.5 percent, the modulus is 3.6, and the sodium silicate solution is prepared after stirring until the sodium silicate solution is completely dissolved; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to 11 to obtain the silica sol.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99% of compound fertilizer and 1% of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer, which is the same as the preparation method of the embodiment 1.
Example 5
In this embodiment, the fertilizer loss control agent comprises the following raw materials in percentage by weight: 89% of natural silicate powder, which comprises feldspar powder and silica powder with the proportion of 3.2:1, 6% of silica sol with the pH value of 11.2 and 5% of biological compound amino acid.
A preparation method of a fertilizer loss control agent, which is different from the preparation method of example 1 in that:
(1) adding triethanolamine into 10% industrial sulfuric acid according to the parts by weight of 20:2, and uniformly stirring; adding liquid sodium silicate, Na of which is added into deionized water according to the proportion of 8:12SiO355.05 percent of the content and 3.3 of the modulus, and stirring the mixture until the mixture is completely dissolved to prepare a sodium silicate solution; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to be 11.2 to obtain the silica sol.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99.5 percent of compound fertilizer and 0.5 percent of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer, which is the same as the preparation method of the embodiment 1.
Example 6
A fertilizer loss control agent comprises the following raw materials in percentage by weight: 88% of natural silicate powder, which comprises feldspar powder and silica powder with the proportion of 3:1, 8% of silica sol with the pH value of 10.8 and 4% of biological compound amino acid.
A preparation method of a fertilizer loss control agent, which is different from the preparation method of example 1 in that:
(1) preparing silica sol: adding triethanolamine into 10% industrial sulfuric acid at a ratio of 20:1 in parts by weight, and uniformly stirring; adding liquid sodium silicate and Na of the liquid sodium silicate into deionized water according to the proportion of 9:12SiO3The content is 55 percent, the modulus is 3.2, and the sodium silicate solution is prepared after stirring until the sodium silicate solution is completely dissolved; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to be 10.8 to obtain the silica sol.
The energy-gathering loss-control fertilizer comprises the following raw materials in parts by weight: 99.3 percent of compound fertilizer and 0.7 percent of fertilizer loss control agent; the compound fertilizer is a 17-17-17Cl compound fertilizer.
A preparation method of energy-gathering loss-control fertilizer, which is the same as the preparation method of the embodiment 1.
Experimental example 1:
three equal parts of the energy-gathering loss-control fertilizer prepared in the embodiments 1 to 6 of the invention and a common compound fertilizer (17-17-17 Cl new energy compound fertilizer produced by Luxi chemical group Co., Ltd.) were respectively soaked in water with the same volume and left to stand, the temperature of the water was kept at 25 ℃, the initial nutrient release rate of 24 hours and the cumulative nutrient release rate of 28 days were respectively measured, and the average value of the nutrient release rates of the three parts of the ingredients was calculated, and the results are shown in Table 1.
TABLE 1 average nutrient Release Rate
As can be seen from Table 1, the slow release rates of the energy-gathering loss-control fertilizers prepared in the examples 1 to 6 all reach the national standard, the cumulative nutrient release rates in 28 days are less, most of nutrients are released in 24 hours of the common compound fertilizer, and the nutrients are basically and completely released in 28 days; the energy-gathering loss-control fertilizer prepared by the formula and the method has a very good slow release effect.
Experimental example 2:
the energy-gathering loss-control fertilizer and the common compound fertilizer (17-17-17 Cl new energy compound fertilizer produced by Luxi chemical group Limited) prepared in the embodiments 1-6 of the invention are subjected to field test, a blank test group is arranged, the test field is arranged in Rong county, Yuegong City, Sichuan province, the test is Jinnong No. 9 produced by corn seed Jinnong Fengrun seed Limited, the test is arranged as a single-factor test, the test factor is base fertilizer application, each treatment is arranged in 3 repetitions, each repetition is arranged according to a random block arrangement mode, namely the test field is divided into 3 large areas, each large area is divided into 8 small areas, each treatment is arranged according to a random block arrangement mode in 8 small areas of each large area, each small area is respectively applied with 50 Kg/mu of base fertilizer before corn seed sowing, and each small area is different in operation except for base fertilizer application, the other farming operations are completely the same, the corn growth conditions of the test fields are respectively observed, finally, the yield of each test field is measured, and the average yield of 3 repeat communities treated in the same way is calculated; the results are shown in Table 2.
TABLE 2 average yields
| Base fertilizer application operation | Average yield (ton/mu) | |
| Blank group | Base fertilizer is not applied | 0.85 |
| Example 1 | Application of the energy-concentrating loss-controlled Fertilizer prepared in example 1 | 1.25 |
| Example 2 | Application of the energy-concentrating loss-controlled Fertilizer prepared in example 2 | 1.18 |
| Example 3 | Application of the energy-concentrating loss-controlled Fertilizer prepared in example 3 | 1.23 |
| Example 4 | Application of the energy-concentrating loss-controlled Fertilizer prepared in example 4 | 1.29 |
| Example 5 | Application of the energy-concentrating controlled-Release Fertilizer prepared in example 5 | 1.21 |
| Example 6 | Application of the energy-concentrating loss-controlled Fertilizer prepared in example 6 | 1.26 |
| Control group | Applying ordinary compound fertilizer | 1.12 |
As can be seen from Table 2, the average yield of the corn to which the energy-gathering loss-control fertilizer prepared in examples 1-6 is applied is higher, and is increased by 10.71% compared with the average yield of the corn to which a common compound fertilizer is applied; the energy-gathering loss-control fertilizer prepared by the formula and the method can effectively improve the yield of crops.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (9)
1. The fertilizer loss control agent is characterized by comprising the following raw materials in percentage by weight: 85-93% of natural silicate powder, 5-10% of silica sol and 2-5% of biological compound amino acid.
2. The fertilizer loss control agent of claim 1, wherein the natural silicate powder comprises the following components: feldspar powder and silica powder; the proportion of the feldspar powder to the silica powder is 3-3.5: 1.
3. The fertilizer loss control agent of claim 1, wherein the silica sol is an alkaline silica sol having a pH of 10.5 to 11.5; the silica sol is prepared by using the following raw materials: liquid sodium silicate, triethanolamine and sulfuric acid.
4. A method of preparing a loss control agent for a fertilizer according to any one of claims 1 to 3, comprising the steps of:
(1) preparing natural silicate powder: grinding natural silicate into powder to prepare natural silicate powder;
(2) preparing silica sol: adding triethanolamine into 10% industrial sulfuric acid, and stirring; adding liquid sodium silicate into deionized water, and stirring until the liquid sodium silicate is completely dissolved to prepare a sodium silicate solution; under the condition of stirring, adding sulfuric acid solution containing triethanolamine into the sodium silicate solution, and adjusting the pH value to obtain silica sol;
(3) preparing a fertilizer loss control agent: weighing the natural silicate powder prepared in the step (1), the silica sol prepared in the step (2) and the biological compound amino acid according to the proportion, and uniformly mixing to prepare the fertilizer loss control agent.
5. The method for preparing the fertilizer loss control agent according to claim 4, wherein in the step (1), the natural silicate is ground into 200-mesh powder, and then the powder is sheared through 20000 r/min.
6. The preparation method of the fertilizer loss control agent according to claim 4, wherein the proportion of the 10% industrial sulfuric acid to the triethanolamine in the step (2) is 20: 1-3; the proportion of the liquid sodium silicate to the water is 1: 6-9; na of said liquid sodium silicate2SiO3The content of the sodium silicate is 53.30-55.05%, and the modulus of the liquid sodium silicate is 3.2-3.6.
7. The energy-gathering loss-control fertilizer is characterized by comprising the following raw materials in parts by weight: 99 to 99.5% of a fertilizer and 0.5 to 1% of a fertilizer loss control agent according to any one of claims 1 to 3.
8. The energy-concentrating loss-controlled fertilizer according to claim 7, wherein the fertilizer is a compound fertilizer consisting of several of nitrogen fertilizer, potassium fertilizer, phosphorus fertilizer, trace element fertilizer and rare earth element fertilizer.
9. A preparation method of energy-gathering loss-control fertilizer is characterized by comprising the following steps:
(1) fully mixing a fertilizer and a fertilizer loss control agent according to the proportion of any one of claims 7 to 8;
(2) granulating by using an extrusion method to prepare fertilizer granules;
(3) screening out fertilizer particles with the particle size within the range of 1.5-4 mm;
(4) polishing the screened fertilizer particles to prepare the energy-gathering loss-control fertilizer.
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