Environment-friendly degradable slow-release fertilizer coating agent and preparation method thereof

A slow-release fertilizer and environment-friendly technology, applied in the field of environment-friendly degradable slow-release fertilizer coating agent and its preparation, can solve the problems of large-area promotion limitation, difficulty in controlling the release rate, and high cost, and achieve a remarkable slow-release effect. Effect

Inactive Publication Date: 2021-08-20
绥化市中强农业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of coated fertilizers is that the cost is high, and the release rate is difficult to control, which limits its large-scale promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1 of the present invention discloses an environment-friendly degradable slow-release fertilizer coating agent, and the adopted technical scheme is as follows:

[0016] An environment-friendly degradable slow-release fertilizer coating agent, the raw materials are composed of 15 parts by weight of diatomite, 10 parts of polyvinyl alcohol, 10 parts of ethyl acetate, 10 parts of methyl methacrylate, chitosan 10 parts of sugar, 15 parts of water, 5 parts of starch, 8 parts of formaldehyde.

Embodiment 2

[0018] Embodiment 2 of the present invention discloses an environment-friendly degradable slow-release fertilizer coating agent, and the adopted technical scheme is as follows:

[0019] An environment-friendly degradable slow-release fertilizer coating agent, the raw materials are composed of 20 parts by weight of diatomite, 15 parts of polyvinyl alcohol, 15 parts of ethyl acetate, 12 parts of methyl methacrylate, chitosan 13 parts of sugar, 23 parts of water, 7 parts of starch, and 10 parts of formaldehyde.

Embodiment 3

[0021] Embodiment 3 of the present invention discloses an environment-friendly degradable slow-release fertilizer coating agent, and the adopted technical scheme is as follows:

[0022] An environment-friendly degradable slow-release fertilizer coating agent, the raw materials are composed of 17 parts by weight of diatomite, 11 parts of polyvinyl alcohol, 13 parts of ethyl acetate, 14 parts of methyl methacrylate, chitosan 12 parts of sugar, 18 parts of water, 6 parts of starch, 13 parts of glyoxal.

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PUM

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Abstract

The invention discloses an environment-friendly degradable slow-release fertilizer coating agent and a preparation method thereof. The environment-friendly degradable slow-release fertilizer coating agent is prepared from the following raw materials in parts by weight: 15 to 25 parts of diatomite, 10 to 20 parts of polyvinyl alcohol, 10 to 25 parts of ethyl acetate, 10 to 20 parts of methyl methacrylate, 10 to 20 parts of chitosan, 15 to 25 parts of water, 5 to 10 parts of starch and 8 to 16 parts of cross-linking agent. The coating agent disclosed by the invention can form a macromolecular degradable microporous membrane outside an auxiliary material, and the release speed of the fertilizer is controlled according to the field environment difference, so that the effects of environmental protection, degradability and slow release are achieved.

Description

technical field [0001] The invention relates to the technical field of slow-release coating agents, and more specifically relates to an environment-friendly degradable slow-release fertilizer coating agent and a preparation method thereof. Background technique [0002] Coated fertilizer, also known as coated fertilizer. It refers to a type of fertilizer that is coated with a layer of semi-permeable or insoluble film on the surface of water-soluble fertilizer particles and has the characteristics of slowly releasing nutrients. There are many types of coating materials, mainly sulfur, high molecular polymer, resin, paraffin, asphalt and so on. These film-forming substances are wrapped on the surface of water-soluble granular fertilizers to avoid direct contact between fertilizers and soil and crop roots. Water enters the film to dissolve nutrients, and the osmotic pressure increases to promote the diffusion of nutrients into the soil solution through the film, or through the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G5/30
CPCC05G3/40C05G5/30
Inventor 李冠明侯元娟朱晗
Owner 绥化市中强农业科技发展有限公司
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