A kind of preparation method of pig manure free fermentation and low cost organic fertilizer

Abstract

The invention relates to a preparation method of a low-cost fermentation-free pig manure organic fertilizer. The preparation method of the low-cost fermentation-free pig manure organic fertilizer includes steps: (1) collecting pig manure, adding a modifying agent into the pig manure, then adding a deodorant, and well stirring to obtain modified pig manure; (2) selecting spent mushroom compost free of wood chips, regulation the moisture content, and performing aerobic fermentation to obtain zymophyte dregs; (3) well mixing urea, diammonium phosphate, potassium sulfate, the zymophyte dregs, soybean cake powder, ammoniated lignite and a plasticizer to obtain auxiliary materials; (4) subjecting the modified pig manure to solid-liquid separation, drying solids, adding the auxiliary materials, and well mixing to obtain the low-cost fermentation-free pig manure organic fertilizer. The low-cost fermentation-free pig manure organic fertilizer which is free of composting fermentation is high in coarse fiber content of raw materials, low in density, high in biodegradability potential and beneficial to improvement of air permeability, fertilizer retention capacity and water retention capacity after being applied to soil.

Description

technical field [0001] The invention relates to a method for preparing low-cost organic fertilizer without fermentation of pig manure, in particular to a method for preparing low-cost organic fertilizer by using a functional modifier to treat excrement from large-scale pig farms, and belongs to the technical field of recycling of breeding manure. Background technique [0002] With the development of the livestock and poultry breeding industry, its degree of intensification is getting higher and higher, and its specialization features are becoming more and more obvious. Those engaged in breeding do not cultivate the land, and manure cannot be used as fertilizer; those who cultivate the land no longer engage in breeding, agricultural production relies on chemical fertilizers, and the proportion of livestock and poultry manure used as farmland fertilizer has dropped significantly. This has led to the separation of breeding and planting, and the interruption of the chain of circ...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent document CN102887738A (application number: 201210427018.0) discloses a technology for producing pig manure organically fattened pigs by mixed fermentation of pig manure and probiotic liquid, corn flour, distiller's grains, etc., but it is very difficult to mix the materials evenly. And the fermentation process is long, not suitable for large-scale production; Chinese patent document CN103951474A (Application No.: 201410218669.8) discloses the fermentation of biological bacteria, molasses and water after mixed fermentation, and then mixed into pig manure and superphosphate, rice Shells, wood chips, etc. in the mixture, and then build a pile of fermentation to produce organic fertilizer; Chinese patent document CN201933024U (application number: 201120026726.4) discloses the process of using mechanical technology to solve the mechanized fermentation of pig manure, but the operation effect of the equipment is difficult to guarantee; Chinese patent document CN103708967A (application number: 201310746826.8) discloses a method for producing organic fertilizer through microbial dynamic-continuous high-temperature fermentation after pig manure is separated from dry and wet; Chinese patent document CN204237690U (application number: 201420684909.9) discloses a pig Fermentation device for feces

However, the organic fertilizer produced by this method has a slow fertilizer effect and cannot meet the needs of crop growth.

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