Preparation method of mineral element containing coated sustained-release basic fertilizer for paddy rice

A mineral element, coated slow-release technology, applied in the direction of calcium fertilizer, urea compound fertilizer, layered/coated fertilizer, etc., can solve the problems of unfavorable agricultural sustainable development, low utilization rate of inorganic nutrients, and poor water retention performance of fertilizers to achieve good water absorption and water retention, adsorption of soil microorganisms and heavy metals, and improvement of fertilizer utilization

Inactive Publication Date: 2018-07-24
李侠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of water resources in our country, the fertilizers used for rice planting have poor water retention performance, low utilization rate of inorganic nutrients, and short fertilizer efficiency. Long-term application will easily damage the soil environment, resulting in reduced rice yield and rice quality, which is not conducive to the sustainable development of my country's agriculture.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of a kind of paddy rice that the present invention proposes is coated with slow-release base fertilizer containing mineral elements, comprises the following steps:

[0021] S1. Mix the oxidized starch with water, sonicate, then add polyvinyl alcohol and borax, stir, then add potassium persulfate, sodium alginate and acrylamide, stir, then add nano-zeolite powder and sodium lignosulfonate, stir, and dry , to obtain the inner membrane material;

[0022] S2, mixing polylactic acid and polyvinyl alcohol, adding water and stirring, then adding biochar and vinyltriethoxysilane, stirring to obtain the outer membrane material;

[0023] S3. Spray the inner membrane material on the surface of the fertilizer core for coating to obtain material A, and then spray the outer membrane material on the surface of material A for coating to obtain a mineral element-containing coated slow-release base fertilizer for rice.

Embodiment 2

[0025] The preparation method of a kind of paddy rice that the present invention proposes is coated with slow-release base fertilizer containing mineral elements, comprises the following steps:

[0026] S1. Mix 60 parts of oxidized starch with water in parts by weight, ultrasonically treat it for 6 minutes until it becomes a paste, then add 6 parts of polyvinyl alcohol and 5 parts of borax, stir at 60°C for 1 hour, then add 0.2 parts of potassium persulfate, 8 parts Sodium alginate and 10 parts of acrylamide were stirred for 2 hours, then 6 parts of nano-zeolite powder and 6 parts of sodium lignosulfonate were added, stirred for 35 minutes, and dried at 60°C to obtain the inner membrane material;

[0027] S2. Mix 20 parts of polylactic acid and 5 parts of polyvinyl alcohol by weight, add water and stir at 48°C for 2 hours, then add 4 parts of biochar and 1 part of vinyltriethoxysilane, and stir for 1 hour to obtain the external Membrane material;

[0028] S3. Spray the inner ...

Embodiment 3

[0032]The preparation method of a kind of paddy rice that the present invention proposes is coated with slow-release base fertilizer containing mineral elements, comprises the following steps:

[0033] S1. Mix 72 parts of oxidized starch with water in parts by weight, ultrasonically treat it for 7 minutes until it becomes a paste, then add 10 parts of polyvinyl alcohol and 3.5 parts of borax, stir at 58°C for 1.2 hours, then add 0.4 parts of potassium persulfate, 10 1 part of sodium alginate and 12.5 parts of acrylamide, stirred for 1.8 hours, then added 9 parts of nanometer zeolite powder and 9 parts of sodium lignosulfonate, stirred for 45 minutes, and dried at 65°C to obtain the inner membrane material;

[0034] S2. Mix 30 parts of polylactic acid and 6.5 parts of polyvinyl alcohol in parts by weight, add water and stir for 1.5 hours at a temperature of 52°C, then add 6 parts of biochar and 1.5 parts of vinyltriethoxysilane, and stir for 1.2 hours. Obtain outer membrane mat...

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PUM

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Abstract

The invention discloses a preparation method of a mineral element containing coated sustained-release basic fertilizer for paddy rice. According to the preparation method, an internal membrane material and an external membrane material are prepared in advance; then the internal membrane material is sprayed on the surface of a fertilizer core to carry out coating so as to obtain a material A; thenthe external membrane material is sprayed on the surface of the material A to carry out coating so as to obtain the basic fertilizer. The provided coated sustained-release basic fertilizer has the advantages that the nutrients of the coated sustained-release basic fertilizer are comprehensive, the fertilizing effect is long-lasting, the utilization rate is high, the water retention performance isgood, the sustained-release effect of inorganic nutrients is good, moreover, the damage of the basic fertilizer to the soil environment is small, the paddy rice yield is high, and the paddy rice quality is good.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a preparation method of a mineral element-containing coated slow-release base fertilizer for rice. Background technique [0002] As one of the important food crops in my country, rice is rich in nutrition. The fruit is rich in nutrients such as starch, protein, fat, niacin, riboflavin, calcium and iron. It has the characteristics of wide planting area and large demand. Due to the large population base and low per capita arable land in my country, increasing rice production and improving rice quality are of great significance to the daily life of residents and my country's grain reserves. Due to the lack of water resources in my country, fertilizers used for rice planting have poor water retention performance, low utilization rate of inorganic nutrients, and short fertilizer efficiency. Long-term application will easily damage the soil environment, resulting in reduced rice yi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B1/04C05G3/00C05G3/80C05G5/30C05B11/06C05C3/00C05C5/00C05C9/00C05D1/02C05D3/02C05D9/00C05D9/02C05F11/00C05F11/02
Inventor 李侠
Owner 李侠
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