Preparation method of organic fertilizer capable of reducing metal chromium in soil

Abstract

The invention discloses a preparation method of an organic fertilizer capable of reducing metal chromium in soil. The preparation method comprises the following steps: (1) preparing a biological fermentation agent; (2) mixing; (3) carrying out compost fermentation; (4) burdening; (5) carrying out secondary fermentation; (6) crushing; (7) granulating; and (8) drying. According to the invention, multiple microorganisms are adopted for composite anaerobic fermentation of pig manure to produce an efficient biological organic fertilizer, so that the method is natural and environment-friendly and fundamentally solves the problem of environmental pollution; and the organic fertilizer prepared by the preparation method has the effects of a biological organic fertilizer and a seaweed fertilizer, wherein the fertilizer product is rich in seaweed functional active ingredients and a large amount of probiotics, and can effectively adjust the balance of microorganisms in soil and decompose organic or inorganic components such as organic matters, minerals and the like in the soil, so that the content of chromium metal in the soil is reduced, soil hardening, desertification, salinization and the like caused by perennial dependence on abuse of chemical fertilizers are eliminated, the soil is effectively improved, and the crop productivity is improved.

Description

technical field [0001] The invention discloses a method for preparing an organic fertilizer capable of reducing soil metal chromium. Background technique [0002] At present, in the fertilization application of pig manure, the main processes include direct drying, natural composting and fermentation of microbial inoculants. Microbial inoculant fermentation is to add functional microorganisms on the basis of compost, use the rapid reproduction of beneficial microorganisms to replace indigenous microorganisms, adjust the structure of compost flora, improve the activity of beneficial microorganisms, and form complex and stable through the mutual synergy between various strains. ecosystem. Its advantage is that it can quickly decompose organic materials such as manure and straw to generate heat energy, so that the temperature of organic materials can be raised rapidly, inhibit or kill harmful microorganisms, improve the degree of decomposition, and prepare bio-organic fertilize...

AI Technical Summary

Problems solved by technology

However, the current microbial inoculant fermentation process still has disadvantages such as severe odor, high heavy metal residues, low degree of decomposition, and long fermentation period in the application of pig manure fertilizer.