Liquid suspended amino acid selenium-rich foliar fertilizer and preparation method thereof

Abstract

The invention discloses a liquid suspended amino acid selenium-rich foliar fertilizer and a preparation method thereof, the liquid suspended amino acid selenium-rich foliar fertilizer comprises the following raw materials by weight: 30-32 parts of amino acid, 14-15 parts of selenium fertilizer, 6-8 parts of calcium fertilizer, 5-7 parts of magnesium fertilizer, 2-4 parts of boron fertilizer, 1-2 parts of EDTA-Zn, 1-2 parts of EDTA-Fe, 1-2 parts of EDTA-Cu, 1-2 parts of EDTA-Mo, 0-0.1 part of a plant growth regulator, and 0-1 part of a wetting dispersant. 0-2 parts of an emulsifier, 0-1 part of a thickening agent and 31-34 parts of water. The foliar fertilizer disclosed by the invention is good in suspension property, uniform and stable, not only contains a certain amount of selenium element, but also contains a certain amount of amino acid and trace elements, and has certain effects on producing selenium-rich agricultural products and improving crop quality. The suspended amino acid leaf fertilizer is low in production cost, convenient to transport, simple to operate, free of pollution in the production process and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizers, and in particular to a liquid suspended amino acid selenium-enriched foliar fertilizer and a preparation method thereof. Background Art

[0002] Selenium is an essential trace element for humans and animals. It has important functions such as removing lipid peroxides, improving immunity, anti-cancer, removing heavy metal poisoning and delaying aging. It is called the "spark of life". The Chinese Nutrition Society recommends a daily intake of 20 to 50 μg of selenium. Selenium deficiency can easily cause metabolic disorders in the human body and lead to diseases. 72% of the land in my country is selenium-deficient, and about 300 million people are threatened by selenium deficiency. Therefore, selenium supplementation has become a major health issue for urban and rural residents in selenium-deficient areas.

[0003] Selenium deficiency in soil is directly related to the parent rock and parent material of the soil. Since the selenium content in the soil is insufficient, it is necessary to increase the selenium content in food through exogenous selenium supplementation. At present, the method of exogenous selenium supplementation is mainly through foliar spraying of selenium or applying sodium selenite to the soil. The method of applying selenium in the soil is difficult to control the appropriate amount of selenium. Too low selenium dosage cannot meet the requirements of selenium enrichment. Too high dosage will cause selenium poisoning, and excessive application of selenium will also cause soil and water pollution and waste. Foliar spraying of selenium is easy to control the amount and time of selenium application, and it is directly sprayed on the surface of the leaves, which is easy for plants to absorb. The amount of foliar fertilizer is low and will not cause soil pollution. Based on this, it is necessary to provide a liquid suspended amino acid selenium-enriched foliar fertilizer to address the above problems, so as to achieve the purpose of producing selenium-enriched agricultural products without polluting the soil. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a liquid suspended amino acid selenium-enriched foliar fertilizer and a preparation method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A liquid suspended amino acid selenium-enriched foliar fertilizer consists of the following components in parts by weight: 30-32 parts of amino acids, 14-15 parts of selenium fertilizer, 6-8 parts of calcium fertilizer, 5-7 parts of magnesium fertilizer, 2-4 parts of boron fertilizer, 1-2 parts of EDTA-Zn, 1-2 parts of EDTA-Fe, 1-2 parts of EDTA-Cu, 1-2 parts of EDTA-Mo, 0-0.1 parts of plant growth regulators, 0-1 parts of wetting and dispersing agents, 0-2 parts of emulsifiers, 0-1 parts of thickeners, and 31-34 parts of water.

[0007] Preferably, the liquid suspended amino acid selenium-enriched foliar fertilizer is composed of the following components in parts by weight: 30.5 parts of amino acids, 14.4 parts of selenium fertilizer, 6.5 parts of calcium fertilizer, 5.5 parts of magnesium fertilizer, 2.5 parts of boron fertilizer, 1 part of EDTA-Zn, 1 part of EDTA-Fe, 1 part of EDTA-Cu, 1 part of EDTA-Mo, 0.1 part of plant growth regulator, 0.5 part of wetting dispersant, 1 part of emulsifier, 1 part of thickener, and 34 parts of water.

[0008] Preferably, the selenium fertilizer is one or more of sodium selenite, sodium selenate, chelated selenium, humic acid selenium fertilizer, and protein amino acid selenium fertilizer.

[0009] Preferably, the amino acid is one or more of glycine, sodium glycinate, potassium glycinate, alanine, sodium alanine, potassium alanine, leucine, sodium leucine, potassium leucine, isoleucine, sodium isoleucine, potassium isoleucine, phenylalanine, sodium isoleucine, potassium isoleucine, proline, sodium proline, potassium proline, tryptophan, sodium tryptophan, potassium tryptophan, serine, tyrosine, sodium tyrosine, potassium tyrosine, cysteine, cysteine, potassium cysteine, methionine, sodium methionine, potassium methionine, asparagine, sodium asparagine, potassium asparagine, threonine, sodium threonine, potassium threonine, aspartic acid, sodium aspartate, sodium aspartate potassium, glutamic acid, sodium glutamate, potassium glutamate, histidine, sodium histidine, and potassium histidine.

[0010] Preferably, the calcium fertilizer is one or more of calcium nitrate, calcium oxide, calcium ammonium nitrate, and EDTA-Ca;

[0011] Preferably, the magnesium fertilizer is one or more of magnesium borate, magnesium alginate, and magnesium nitrate;

[0012] Preferably, the boron fertilizer is one or both of borax and boric acid.

[0013] Preferably, the plant growth regulator is one or more of aminoethyl hexanoate, auxin, and brassinolide;

[0014] Preferably, the wetting and dispersing agent is one or more of sodium lignin sulfonate, sodium naphthalene sulfonate formaldehyde condensate, fatty alcohol polyoxyethylene ether, fatty alcohol, triethylhexyl phosphoric acid, methyl amyl alcohol, polyacrylamide, fatty acid polyethylene glycol ester, polyethylene glycol, and vinyl bisstearyl phthalamide;

[0015] Preferably, the emulsifier is one or more of calcium dodecylbenzene sulfonate, sodium alkylaryl sulfonate, sodium dialkylbenzene sulfonate, sodium hydroxy alkyl sulfonate, polyoxyethylene styrylphenyl ether, polyoxyethylene benzylphenol ether, polyoxyethylene octylphenol ether, polyoxyethylene sec-octylphenol ether, polyoxyethylene bis-tributylphenol ether, polyoxyethylene alkylphenol ether, polyoxypropylene ether, polyoxyethylene benzyl dimethylphenol ether, polyoxypropylene benzyl diphenol ether, polyoxyethylene lauryl alcohol ether, polyoxyethylene octadecyl alcohol ether;

[0016] Preferably, the thickener is one or more of xanthan gum, soy methyl cellulose, sodium soy methyl cellulose, diatomaceous earth, attapulgite, silica gel, gum arabic, artemisia selengensis gum, fenugreek gum, polyacrylamide, and polyvinyl alcohol.

[0017] Preferably, the method for preparing the liquid suspended amino acid selenium-enriched foliar fertilizer comprises the following steps:

[0018] (1) Material processing: crush the selenium fertilizer, calcium fertilizer, magnesium fertilizer and boron fertilizer, and all components are passed through an 80-mesh sieve;

[0019] (2) Material mixing: Add amino acids into water and stir evenly while heating. The heating temperature is 45° C. and the stirring time is 2 to 4 minutes;

[0020] (3) adding selenium fertilizer, calcium fertilizer, magnesium fertilizer, boron fertilizer, EDTA-Zn, EDTA-Fe, EDTA-Cu, EDTA-Mo, and plant growth regulator to the material in step (2) in sequence, stirring each material thoroughly before adding another material, heating and stirring at 40° C. for 5 to 8 min to obtain a mixed solution;

[0021] (4) Emulsification and shearing: using a high-speed shear emulsifier to shear and stir the mixed solution obtained in step (3), the shearing time is 13 minutes, the speed of the high-speed shear emulsifier is about 5000 rpm, and a uniform and viscous mixed solution is obtained; (5) adding a wetting dispersant, an emulsifier, and a thickener to the mixed solution obtained in step (4), using a high-speed shear emulsifier to fully stir, the stirring time is 6 minutes, the speed of the high-speed shear emulsifier is about 5000 rpm, and after stirring is complete, cooling to room temperature to obtain the liquid suspended amino acid selenium-enriched foliar fertilizer.

[0022] The present invention adopts the above technical scheme, and the liquid suspended amino acid selenium-enriched foliar fertilizer has good suspension, is uniform and stable, and has not only a certain selenium content, but also a certain amino acid content and a small amount of trace elements. While producing selenium-enriched agricultural products, it can meet the needs of plants for trace elements during the growth period. Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The liquid suspended amino acid selenium-enriched foliar fertilizer of the present invention has low production cost, convenient transportation, simple operation, no pollution during the production process, and is green and environmentally friendly;

[0024] (2) The raw materials of the present invention are easily available, which greatly reduces the production cost and is suitable for machine spraying, which can significantly improve the fertilization efficiency;

[0025] (3) The liquid suspended amino acid selenium-rich foliar fertilizer of the present invention is not easy to precipitate and delaminate, and has a selenium content of ≥5 g / L and an amino acid content of ≥100 g / L. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with specific embodiments, but the embodiments do not limit the present invention in any form.

[0027] A liquid suspended amino acid selenium-enriched foliar fertilizer comprises the following components in parts by weight: 30-32 parts of amino acids, 14-15 parts of selenium fertilizer, 6-8 parts of calcium fertilizer, 5-7 parts of magnesium fertilizer, 2-4 parts of boron fertilizer, 1-2 parts of EDTA-Zn, 1-2 parts of EDTA-Fe, 1-2 parts of EDTA-Cu, 1-2 parts of EDTA-Mo, 0-0.1 parts of plant growth regulators, 0-1 parts of wetting and dispersing agents, 0-2 parts of emulsifiers, 0-1 parts of thickeners, and 31-34 parts of water.

[0028] Example 1

[0029] The liquid suspended amino acid selenium-enriched foliar fertilizer described in this embodiment contains the following components in parts by weight:

[0030] Glycine 31.8 Sodium selenite 14 Calcium Oxide 6.5 Magnesium sulfate 5.4 Boric acid 2.7 EDTA-Zn 1.2 EDTA-Cu 1.2 EDTA-Mo 1.2 EDTA-Fe 1.2 Aminoethyl hexanoate 0.1 Methyl amyl alcohol 0.5 Calcium dodecylbenzenesulfonate 1.3 Xanthan gum 0.4 water 32.5

[0031] The preparation method of the above-mentioned liquid suspended amino acid foliar fertilizer comprises the following steps:

[0032] (1) Material processing: crush the selenium fertilizer, calcium fertilizer, magnesium fertilizer and boron fertilizer, and all components are passed through an 80-mesh sieve;

[0033] (2) Material mixing: Add amino acids into water and stir evenly while heating. The heating temperature is 45°C and the stirring time is 3 min.

[0034] (3) adding selenium fertilizer, calcium fertilizer, magnesium fertilizer, boron fertilizer, EDTA-Zn, EDTA-Fe, EDTA-Cu, EDTA-Mo, and plant growth regulator to the material in step (2) in sequence, stirring each material thoroughly and then adding another material, heating and stirring at 40° C. for 6 min to obtain a mixed solution;

[0035] (4) Emulsification and shearing: using a high-speed shear emulsifier, shearing for 13 min at 5000 rpm to obtain a uniform and viscous mixed liquid;

[0036] (5) adding a wetting dispersant, an emulsifier and a thickener to the mixed solution, stirring the mixture for 6 min at a speed of 5000 rpm using a high-speed shear emulsifier, and cooling the mixture to room temperature after stirring to obtain the liquid suspended amino acid selenium-enriched foliar fertilizer.

[0037] Example 2

[0038] The liquid suspended amino acid selenium-enriched foliar fertilizer described in this embodiment contains the following components in parts by weight:

[0039]

[0040]

[0041] The preparation method of the liquid suspended amino acid selenium-enriched foliar fertilizer is the same as that in Example 1.

[0042] Example 3

[0043] The liquid suspended amino acid selenium-enriched foliar fertilizer described in this embodiment contains the following components in parts by weight:

[0044] Glycine 31 Sodium selenite 14.5 Calcium Oxide 6.3 Magnesium sulfate 5.5 Boric acid 2.8 EDTA-Zn 1.2 EDTA-Cu 1.2 EDTA-Mo 1.2 EDTA-Fe 1.2 Brassinolide 0.1 Triethylhexyl phosphate 0.5 Lauryl alcohol polyoxyethylene ether 1.2 Sodium alkyl aryl sulfonate 0.4 water 32.9

[0045] The preparation method of the liquid suspended amino acid selenium-enriched foliar fertilizer is the same as that in Example 1.

[0046] Example 4

[0047] The liquid suspended amino acid selenium-enriched foliar fertilizer described in this embodiment contains the following components in parts by weight:

[0048]

[0049]

[0050] The preparation method of the liquid suspended amino acid selenium-enriched foliar fertilizer is the same as that in Example 1.

[0051] Example 5

[0052] In order to explore the effect of the liquid suspended amino acid selenium-enriched foliar fertilizer of the present invention on the selenium content and yield of vegetables, a comparative test of liquid suspended amino acid selenium-enriched foliar fertilizer was carried out at the test site of Xitou Village, Baisha Town, Minhou County, Fujian Academy of Agricultural Sciences.

[0053] 1 Materials and Methods

[0054] (1) Overview of the test site

[0055] The experiment was conducted in Xitou Village, Baisha Town, Minhou County, Fujian Province, which has a southern subtropical marine climate with an average annual temperature of 21.5°C over three years. The test soil was garden soil, and the physical and chemical properties of the test soil were 80.6 mg / kg of alkaline nitrogen, 75.8 mg / kg of available phosphorus, 120.5 mg / kg of available potassium, 21.3 g / kg of organic matter, 0.32 mg / kg of total selenium, and pH 5.23.

[0056] (2) Experimental design

[0057] A field plot comparative test was conducted, with the crop planted being Chinese cabbage, with the sowing time being September 23 and the harvesting time being November 25.

[0058] The experiment was conducted with 5 treatments and 3 replicates. The area of ​​each plot was 20 m2. 2 The control group: the conventional fertilization treatment was adopted, 500 kg / mu of commercial organic fertilizer was applied as base fertilizer (containing 25% organic matter, N+P2O5+K2O≥2%), and 30 kg / mu of compound fertilizer (N:P2O5:K2O=15:15:15) was applied as base fertilizer.

[0059] Experimental Group:

[0060] Treatment 1: Application of a liquid suspended amino acid selenium-enriched foliar fertilizer produced in Example 1.

[0061] Treatment 2: Application of a liquid suspended amino acid selenium-enriched foliar fertilizer produced in Example 2.

[0062] Treatment 3: Application of a liquid suspended amino acid selenium-enriched foliar fertilizer produced in Example 3.

[0063] Treatment 4: Application of a liquid suspended amino acid selenium-enriched foliar fertilizer produced in Example 4.

[0064] The fertilization method of treatments 1-4 is as follows: In addition to the base fertilizer applied as usual, the rest is sprayed on the leaves. Starting 30 days after the sowing of the Chinese cabbage, the liquid suspended amino acid selenium-rich foliar fertilizer was diluted 600 times and sprayed on the leaves, once every 10 days, for a total of 3 times. The control group and the experimental group fertilized according to their own methods, and other fertilization management measures were consistent with the conventional management of local farmers.

[0065] 2 Results and analysis

[0066] 2.1 Effects of different treatments on Chinese cabbage yield

[0067] As shown in Table 1, the yield of Chinese cabbage in treatments 1, 2, 3 and 4 sprayed with the liquid suspended amino acid selenium-rich foliar fertilizer disclosed by the present invention is significantly higher than that of conventional fertilization, and is increased by 12.83%, 14.63%, 13.61% and 13.95% respectively compared with conventional fertilization, and the yield difference between the foliar fertilizer treatments is not significant. It can be seen that spraying liquid suspended amino acid foliar fertilizer can significantly increase the yield of Chinese cabbage.

[0068] Table 1 Effects of different treatments on Chinese cabbage yield

[0069]

[0070] 2.2 Effects of different treatments on selenium content in pakchoi

[0071] As can be seen from Table 2, the selenium content in the pakchoy treated with the liquid suspended amino acid selenium-rich foliar fertilizer disclosed in the present invention is 0.0143-0.0154 mg / kg, which all reach the national standard for selenium-rich vegetables (≥0.01 mg / kg), and the selenium content in the pakchoy treated with the customary fertilization does not reach the national standard, and the selenium content in the pakchoy treated with the customary fertilization is significantly higher than that in the customary fertilization, which is 68.24%-81.18% higher than that in the customary fertilization, and there is no significant difference between the foliar fertilizer treatments. It shows that the selenium content in the pakchoy treated with the foliar fertilizer disclosed in the present invention can be significantly increased.

[0072] Table 2 Effects of different treatments on selenium content in Chinese cabbage

[0073]

[0074]

[0075] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A liquid suspended amino acid selenium-enriched foliar fertilizer, characterized in that: Its components include, by weight: 30-32 parts of amino acids, 14-15 parts of selenium fertilizer, 6-8 parts of calcium fertilizer, 5-7 parts of magnesium fertilizer, 2-4 parts of boron fertilizer, 1-2 parts of EDTA-Zn, 1-2 parts of EDTA-Fe, 1-2 parts of EDTA-Cu, 1-2 parts of EDTA-Mo, 0-0.1 parts of plant growth regulators, 0-1 parts of wetting and dispersing agents, 0-2 parts of emulsifiers, 0-1 parts of thickeners, and 31-34 parts of water.

2. A liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 1, characterized in that: Its components include, by weight: 30.5 parts of amino acids, 14.4 parts of selenium fertilizers, 6.5 parts of calcium fertilizers, 5.5 parts of magnesium fertilizers, 2.5 parts of boron fertilizers, 1 part of EDTA-Zn, 1 part of EDTA-Fe, 1 part of EDTA-Cu, 1 part of EDTA-Mo, 0.1 part of plant growth regulator, 0.5 part of wetting and dispersing agent, 1 part of emulsifier, 1 part of thickener, and 34 parts of water.

3. A liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 1, characterized in that: The selenium fertilizer is one or more of sodium selenite, sodium selenate, chelated selenium, humic acid selenium fertilizer, and protein amino acid selenium fertilizer.

4. A liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 1, characterized in that: The amino acid is one or more of glycine, sodium glycinate, potassium glycinate, alanine, sodium alanine, potassium alanine, leucine, sodium leucine, potassium leucine, isoleucine, sodium isoleucine, potassium isoleucine, phenylalanine, sodium isoleucine, potassium isoleucine, proline, sodium proline, potassium proline, tryptophan, sodium tryptophan, potassium tryptophan, serine, tyrosine, sodium tyrosine, potassium tyrosine, cysteine, cysteine, potassium cysteine, methionine, sodium methionine, potassium methionine, asparagine, sodium asparagine, potassium asparagine, threonine, sodium threonine, potassium threonine, aspartic acid, sodium aspartate, sodium aspartate potassium, glutamic acid, sodium glutamate, potassium glutamate, histidine, sodium histidine, and potassium histidine.

5. A liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 1, characterized in that: The calcium fertilizer is one or more of calcium nitrate, calcium oxide, calcium ammonium nitrate, and EDTA-Ca; The magnesium fertilizer is one or more of magnesium borate, magnesium alginate and magnesium nitrate; The boron fertilizer is one or both of borax and boric acid.

6. A liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 1, characterized in that: The plant growth regulator is one or more of aminoethyl hexanoate, auxin, and brassinolide; The wetting and dispersing agent is one or more of sodium lignin sulfonate, sodium naphthalene sulfonate formaldehyde condensate, fatty alcohol polyoxyethylene ether, fatty alcohol, triethylhexyl phosphoric acid, methyl amyl alcohol, polyacrylamide, fatty acid polyethylene glycol ester, polyethylene glycol, and vinyl bis-stearyl phthalamide; The emulsifier is one or more of calcium dodecylbenzene sulfonate, sodium alkylaryl sulfonate, sodium dialkylbenzene sulfonate, sodium hydroxy alkyl sulfonate, polyoxyethylene styrylphenyl ether, polyoxyethylene benzylphenol ether, polyoxyethylene octylphenol ether, polyoxyethylene sec-octylphenol ether, polyoxyethylene bis-tributylphenol ether, polyoxyethylene alkylphenol ether, polyoxypropylene ether, polyoxyethylene benzyl dimethylphenol ether, polyoxypropylene benzyl diphenol ether, polyoxyethylene lauryl alcohol ether, polyoxyethylene octadecyl alcohol ether; The thickener is one or more of xanthan gum, shuttle methyl cellulose, sodium shuttle methyl cellulose, diatomaceous earth, attapulgite, silica gel, gum arabic, artemisia selengensis gum, fenugreek gum, polyacrylamide and polyvinyl alcohol.

7. A method for preparing a liquid suspended amino acid selenium-enriched foliar fertilizer as described in any one of claims 1 to 6, characterized in that: The steps include: (1) Material processing: crush selenium fertilizer, calcium fertilizer, magnesium fertilizer and boron fertilizer, and all components are screened through an 80-mesh sieve; (2) Material mixing: Add amino acids into water and stir evenly while heating; (3) Sequentially add selenium fertilizer, calcium fertilizer, magnesium fertilizer, boron fertilizer, EDTA-Zn, EDTA-Fe, EDTA-Cu, EDTA-Mo, and plant growth regulator to the material in step (2), fully stir each material before adding another material, and heat and stir to obtain a mixed solution; (4) Emulsification and shearing: using a high-speed shear emulsifier to shear and stir the mixed solution obtained in step (3) to obtain a uniform and viscous mixed solution; (5) Add a wetting dispersant, an emulsifier, and a thickener to the mixed solution obtained in step (4), stir the mixture thoroughly using a high-speed shear emulsifier, and cool the mixture to room temperature after stirring to obtain the liquid suspended amino acid selenium-enriched foliar fertilizer.

8. The method for preparing a liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 7, characterized in that: The heating temperature of step (2) is 45°C and the stirring time is 2 to 4 minutes; the heating temperature of step (3) is 40°C and the stirring time is 5 to 8 minutes.

9. The method for preparing a liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 7, characterized in that: The shearing time of step (4) is 13 minutes, and the rotation speed of the high-speed shear emulsifier is about 5000 rpm.

10. The method for preparing a liquid suspended amino acid selenium-enriched foliar fertilizer according to claim 7, characterized in that: The stirring time of step (5) is 6 minutes, and the rotation speed of the high-speed shear emulsifier is about 5000 rpm.

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