Cattle bone powder biogas residue fermentation organic fertilizer and preparation method thereof

Abstract

The invention provides a cattle bone powder biogas residue fermentation organic fertilizer and a preparation method thereof. The fertilizer comprises, in weight percent, 20-60wt% of cattle bone powderwaste residues, 15-55wt% of biogas residues, 1-20wt% of smoke powder, 1-10wt% of amino acid powder and 1-5wt% of fermentation preparations. The preparation method includes the steps: mixing the cattle bone powder waste residues, the biogas residues, the amino acid powder and the fermentation preparations according to ratio to form mixed materials; adding the smoke powder to adjust the water content of the mixed materials to range from 40% to 70%; fermenting the mixed materials with the adjusted water content for 25-45 days; turning stacks for 4-6 times during fermentation; sieving the fermented materials to obtain the organic fertilizer. Therefore, environmental pollution caused by arbitrary discharge of the cattle bone powder waste residues is avoided, the organic fertilizer prepared byprocessing really has good fertilization effects on crops, crop yield is improved, acid soil can be neutralized and conditioned after fertilization, the quantity of raw material sources is enormous, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an organic fertilizer fermented from bovine bone meal and biogas residue and a preparation method thereof. Background technique [0002] Fertilizer is a class of substances that provide one or more essential nutrients for plants, improve soil properties, and increase soil fertility. One of the material basis of agricultural production. Fertilizers currently on the market are mainly divided into inorganic fertilizers and organic fertilizers. Among them, inorganic fertilizers are mineral fertilizers, also called chemical fertilizers, referred to as chemical fertilizers; they have the characteristics of simple ingredients, high active ingredients, easy solubility in water, fast decomposition, and easy absorption by roots, so they are called "quick-acting fertilizers". [0003] However, in the existing agricultural production, inorganic fertilizers are used in large quantities ...

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Problems solved by technology

[0003] However, in the existing agricultural production, inorganic fertilizers are used in large quantities or even excessively, resulting in a decrease in soil organic matter content, soil acidification, soil physical and chemical properties, and serious damage to microbial populations in the soil, which eventually lead to problems such as poor fertilizer and water retention and slow growth of crops.

[0004] It is worth noting that bovine bone meal waste residue is the solid waste produced when bovine bone is used as raw material to prepare gelatin to produce hollow pharmaceutical capsules; bovine bone meal contains about 12wt% organic calcium, 3-4wt% phosphorus, 2wt% potassium and 8-20wt% Crude protein and other nutrients, and bovine bone meal has chemical characteristics such as weak alkalinity with a pH value of 8-11. However, at present, only a small part of the bovine bone meal waste in my country is used as feed and calcium-containing products, and the remaining waste is discarded at will. environment, and waste of resources that can be reused in bovine bone meal

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