Granular compounded organic fertilizer and preparation method thereof

Abstract

The invention discloses a granular compounded organic fertilizer which comprises the following raw materials in parts by weight: 60-80 parts of livestock manure, 30-50 parts of manioc wastes, 12-25 parts of sugar plant filter mud, 5-10 parts of medicine dregs, 40-60 parts of white mud, 1-5 parts of potassium fulvic acid, 5-10 parts of an inorganic fertilizer, 1-5 parts of biological bacteria, 5-10 parts of fermentation bacterial and 1-5 parts of a compound aid, wherein the weight ratio of nitrogen and phosphorus to potassium in the inorganic fertilizers is 15:(3-8):(8-12). The invention further provides a preparation method of the granular compounded organic fertilizer. As the granular compounded organic fertilizer is prepared from agricultural wastes through two times of fermentation, wastes can be turned into wealth, and the problem of organic matter environment pollution can be solved; due to the addition of inorganic fertilizer components, and appropriate proportions of elements of nitrogen, phosphorus and potassium, a good fertilizer effect can be achieved, and nitration absorption of plants can be promoted; the prepared granular compounded organic fertilizer is good in organic fertilizer effect, is capable of loosening soil and powerfully ensures that high-yield, safe, high-quality and efficient agricultural products can be produced.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizers, in particular to a granular compound organic fertilizer and a preparation method thereof. Background technique [0002] In recent years, due to the gradual abandonment of farm bio-organic fertilizers in agricultural planting and the rapid development of the chemical fertilizer industry, the excessive use of chemical fertilizers has resulted. At present, 30-50kg of chemical fertilizers are required per mu of land in my country every year, and there is a trend of increasing year by year. . Due to the long-term excessive use of chemical fertilizers, the three phases of the soil are seriously out of balance, and the organic matter content in the soil has dropped from about 3% to less than 1%. As a result, the frequency of pesticide use has increased, the quality of agricultural products has declined, and poisoning incidents caused by toxic and harmful substance residues have occurred from...

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Problems solved by technology

[0003] The purpose of the present invention is to: aim at the above existing problems, provide a kind of granular compound organic fertilizer and its preparation method, the present invention obtains the granular compound organic fertilizer through secondary fermentation of agricultural waste, turns waste into wealth, and solves the problem of organic matter The problem of environmental pollution; the granular compound organic fertilizer of the present invention is added with inorganic fertilizer, the ratio of nitrogen, phosphorus and potassium elements is suitable, the fertilizer effect is good, and the absorption of plant nutrients is promoted

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