Humic acid synergistic type slow release compound fertilizer particle

Abstract

The invention discloses a humic acid synergistic type slow release compound fertilizer particle, and belongs to the technical field of a slow release compound fertilizer, wherein each compound fertilizer particle is formed by compounding three layers of structures including an inner core particle prepared from biological humic acid, a slow release layer prepared from slow release agents and urea,and a caking-proof layer prepared from caking-proof agents. The biological humic acid contained in the inner core particle of the compound fertilizer is rich in various organic matters, has high dissolution performance and small molecular weight, and can be directly absorbed by crops; microorganisms generate various active substance such as various amino acids and plant hormones, and can promote the root system growth. Meanwhile, the biological humic acid has a certain slow release function; the trace elements in the soil can be chelated; the fixed loss of phosphorus can be reduced; the fertilizer utilization rate is effectively improved; the crop stress resistance is enhanced; for the slow release layer, release control agents are added in the urea slurry, so that the hydrolysis speed andnitration effects of the urea in the soil can be reduced; the nutrient release time is prolonged; the requirements of crops in the middle and later stage on the nutrients can be met; the premature senility is prevented.

Description

technical field [0001] The invention belongs to the technical field of slow-release compound fertilizers, in particular to a humic acid synergistic slow-release compound fertilizer granule. Background technique [0002] As an important agricultural product, chemical fertilizer plays a significant role in increasing crop yield and is an indispensable factor of production in modern agriculture. People have used a large amount of inorganic fertilizers for a long time, coupled with improper use methods, the fertilizer rate is not high, resulting in a large amount of fertilizer loss, pollution of soil and water, and the decline of crop resistance, which seriously threatens the sustainable development of agriculture. A variety of chemical and physical methods have been proposed to solve the problem of fast dissolution and low utilization of nitrogen fertilizers by exploring, and slowing down the decomposition and conversion of nitrogen by adding long-acting slow-release agents to ...

AI Technical Summary

Problems solved by technology

People have used a large amount of inorganic fertilizers for a long time, coupled with improper use methods, the fertilizer rate is not high, resulting in a large amount of fertilizer loss, polluting the soil and water, and reducing the stress resistance of crops, which seriously threatens the sustainable development of agriculture.

A variety of chemical and physical methods have been proposed to solve the problem of fast dissolution and low utilization of nitrogen fertilizers by exploring, and slowing down the decomposition and conversion of nitrogen by adding long-acting slow-release agents to fertilizers and inhibiting the activity of certain enzymes in the soil is An effective way to increase fertilizer use efficiency

[0003] Extensive application of inorganic chemical fertilizers can easily lead to a decrease in soil fertility, which not only destroys the acid-base balance of the soil, but also leads to the decline of soil organic matter content and the appearance of soil compaction.

Biological humic acid powder is a kind of macromolecular organic substance, which can promote soil improvement, increase efficiency, prevent and control crop diseases, improve the quality of agricultural products, prevent soil and agricultural products from being polluted, and enhance the stress resistance of crops. Release fertilizer has good fertilizer utilization value, but it is less popularized and used at present

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