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A kind of high biological activity slow-release fertilizer and its preparation method

A bioactive, slow-release fertilizer technology, applied in nitrogen fertilizers, fertilization devices, organic fertilizers, etc., to achieve the effects of improving mechanical properties and thermal stability, improving fertilizer utilization, and good film-forming properties

Active Publication Date: 2021-08-27
贵州丰古农业(集团)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of existing microbial fertilizers, the present invention provides a biological slow-release fertilizer with high microbial activity, long-acting slow-release, high utilization rate and no secondary pollution

Method used

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  • A kind of high biological activity slow-release fertilizer and its preparation method
  • A kind of high biological activity slow-release fertilizer and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A slow-release fertilizer with high biological activity, consisting of the following raw materials in parts by weight: 7 parts of lignin, 1.5 parts of polyaspartic acid, 0.2 parts of carboxymethyl cellulose, 8 parts of urea, 10 parts of urea formaldehyde, attapulgite 4 parts of soil, 4 parts of montmorillonite, 10 parts of polyvinyl alcohol, 3 parts of corn starch, 5 parts of plasticizer, 1 part of emulsifier, 6 parts of weathered lignite, 2 parts of microporous silica gel, 6 parts of biomass particles, containing 1 part of bacterial concentrate, 3 parts of starch adhesive.

[0031] Further, the biomass particles are obtained by crushing crop stalks and sawdust, and the particle size is 1.0-2.0 mm.

[0032] Further, the bacterium-containing concentrated liquid is obtained by stirring evenly the yeast waste liquid with a mass fraction of 30% and the compound microbial liquid with a mass fraction of 2%, wherein the compound microbial liquid is purple photosynthetic bacter...

Embodiment 2

[0041] A slow-release fertilizer with high biological activity, consisting of the following raw materials in parts by weight: 9 parts of lignin, 2.5 parts of polyaspartic acid, 0.4 parts of carboxymethyl cellulose, 12 parts of urea, 15 parts of urea formaldehyde, attapulgite 7 parts of soil, 6 parts of montmorillonite, 13 parts of polyvinyl alcohol, 5 parts of corn starch, 8 parts of plasticizer, 1.5 parts of emulsifier, 14 parts of weathered lignite, 3.5 parts of microporous silica gel, 12 parts of biomass particles, containing Bacteria concentrate 3 parts, starch adhesive 5 parts.

[0042] Further, the biomass particles are obtained by crushing crop stalks and sawdust, and the particle size is 1.0-2.0 mm.

[0043] Further, the bacterium-containing concentrated liquid is obtained by stirring evenly the yeast waste liquid with a mass fraction of 30% and the compound microbial liquid with a mass fraction of 2%, wherein the compound microbial liquid is purple photosynthetic bact...

Embodiment 3

[0052] A slow-release fertilizer with high biological activity, consisting of the following raw materials in parts by weight: 13 parts of lignin, 3 parts of polyaspartic acid, 0.6 parts of carboxymethyl cellulose, 15 parts of urea, 20 parts of urea formaldehyde, attapulgite 10 parts of soil, 9 parts of montmorillonite, 15 parts of polyvinyl alcohol, 6 parts of corn starch, 10 parts of plasticizer, 2 parts of emulsifier, 17 parts of weathered lignite, 5 parts of microporous silica gel, 15 parts of biomass particles, containing 5 parts of bacterial concentrate and 7 parts of starch adhesive.

[0053] Further, the biomass particles are obtained by crushing crop stalks and sawdust, and the particle size is 1.0-2.0 mm.

[0054] Further, the bacterium-containing concentrated liquid is obtained by stirring evenly the yeast waste liquid with a mass fraction of 30% and the compound microbial liquid with a mass fraction of 2%, wherein the compound microbial liquid is purple photosynthet...

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Abstract

The invention discloses a high biological activity slow-release fertilizer, which is composed of the following raw materials in parts by weight: 7-13 parts of lignin, 1.5-3 parts of polyaspartic acid, 0.2-0.6 parts of carboxymethyl cellulose, urea 8~15 parts, urea formaldehyde 10~20 parts, attapulgite 4~10 parts, montmorillonite 4~9 parts, polyvinyl alcohol 10~15 parts, corn starch 3~6 parts, plasticizer 5~10 parts , 1~2 parts of emulsifier, 6~17 parts of weathered lignite, 2~5 parts of microporous silica gel, 6~15 parts of biomass particles, 1~5 parts of concentrated solution containing bacteria, and 3~7 parts of starch adhesive. The invention also provides its preparation method. In the high biologically active slow-release fertilizer of the present invention, the microbial agent is not only effectively immobilized, but also maintains high activity and sustained release. At the same time, urea and urea-formaldehyde can be released in multiple controlled ways, providing different nutrient requirements for different growth stages of crops, Improve fertilizer use efficiency.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a slow-release fertilizer with high biological activity and a preparation method. Background technique [0002] Because the surface layer of the slow-release fertilizer or itself has low solubility in water, the fertilizer can continuously and slowly release the effective nutrients needed by the plants. Therefore, this type of fertilizer is usually used as a base fertilizer for one-time application, thereby reducing the cost of fertilization and the frequency of fertilization. In addition, due to the slow release of nutrients in the early stage and the continuous release of nutrients in the later stage, the slow-release fertilizer can ensure sufficient nutrient supply to crops, which is relatively close to the nutrient demand characteristics of crops, so that crops can make full use of nutrients, which can alleviate the loss or volatilization of fertilizers due to nutrient los...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/80C05G3/40C05G3/00C05G3/90C05G5/12C05G5/30
CPCC05C9/00C05G3/00C05G3/80C05G5/30C05C9/02C05D9/00C05F11/00C05F11/02C05F11/08
Inventor 韩亚博
Owner 贵州丰古农业(集团)有限责任公司