Method of using kelp residue to prepare organic fertilizer

Abstract

The invention relates to the technical field of fertilizer preparation, in particular to a method of using kelp residue to prepare organic fertilizer. Kelp residue, chicken manure and wheat bran are used as raw materials; the kelp residue and the wheat bran are first subjected to primary defibrillation; pretreated base is formed by explosion; soybean is used as a raw material to obtain urease-containing supernate; the supernate and the pretreated base are blended, and the blend is subjected to composting to obtain the organic fertilizer. Alginate fibers in the kelp residue can relieve osmoticstress caused by salt and drought; proteins are degraded by microbes to generate amino acid such that hydrophilicity of the organic fertilizer is enhanced; produced ammonia may be absorbed and securedby water in compost; urease in soybean extract may enzymatically decompose the nitrogen-containing base, an ammonium salt is produced by reaction, nitric acid molecules can promote hemicellulose andcellulose subjected to ammonia swelling to further hydrolyze into monosaccharides, so that degradation of kelp fibers is promoted; reduced ammonia loss also helps decrease fouling odor occurred in thecomposting process. The method has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of fertilizer preparation, in particular to a method for preparing organic fertilizer by using kelp slag. Background technique [0002] my country is a big agricultural country, and it is also a big country in the production and use of chemical fertilizers. The domestic use of chemical fertilizers has increased from less than 0.1% in 1949 to the vast majority of crops currently being planted with chemical fertilizers. At present, my country's total output and application of chemical fertilizers rank first in the world. . The status of fertilizers in rice production is very important, especially chemical fertilizers, which play a pivotal role in increasing agricultural production, and the input of chemical fertilizers is increasing year by year. [0003] At present, most of the fertilizers used in agriculture are compound fertilizers composed of nitrogen, phosphorus, and potassium. Although this compound fert...

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that due to the limited types and quantities of native microorganisms contained in common biomass organic fertilizers and the limitation of fermentation conditions, there are long fermentation periods, easy loss of nitrogen, and ammonia gas produced during the decomposing process. Odor, which seriously affects the quality and application effect of fertilizers, provides a method for preparing organic fertilizers by using kelp slag