Method for circularly processing cow dung through earthworm composting pond

Abstract

The invention relates to a method for circularly processing cow dung through an earthworm composting pond. The method comprises the steps that a block mass of which the width is 3.5m and the length is 30m is selected, and a drainage ditch of which the depth is 50cm and the width is 40cm is dug all around; gravels of which the particle diameters are 2 to 3cm and the thickness is 7 to 8cm are paved in the block mass, a layer of nylon net piled fertilizer pond is paved all around, a sunshading shed is built at the position of 2.5m above the composting pond of which the temperature is greater than or equal to 30 DEG C; a plastic cloth covers the composting pond of which the temperature is smaller than or equal to 5 DEG C, fresh cow dung and thoroughly decomposed cow dung are taken in the ratio of 2:3, and then corn straw powder is complemented, wherein the green weight ratio of the cow dung to the corn straw powder is 5.6:1, and the C / N ratio is 30:1; urea is used for complementing nitrogen, and the moisture content is 70%; piles of which the height is 20cm, the width is 35 cm and the length is 3cm are piled on the surface of the pond, and the spaces between every two piles is 15cm; earthworms are vaccinated, 3 / 5 of materials which are eaten by earthworms last time are used as new substrates and are covered on the piles by 3-5 cm, the number of the vaccinated earthworms is 0.5 kg / m3, and then a sunshading net is coated; the temperature is 22+ / -4 DEG C, the humidity is 70%, and the fermentation is performed by one month; the earthworms are screened and taken, 2 / 5 of undersize thoroughly decomposed materials and dried earthworm fertilizers are obtained, and the remaining 3 / 5 of oversize materials are returned to the earthworm composting pond; the steps are circulated.

Description

Technical field [0001] The present invention relates to the field of biotechnology, and in particular to a method for using earthworm digestion and degradation combined with microbial composting fermentation, and earthworm composting ponds for recycling cow dung. Background technique [0002] Cow dung is the basic raw material for rotted farm manure, but it is a problem for large-scale cattle farms. Because large-scale cattle farms produce a large amount of cow dung every day, it is waste and pollution source if it is not used by itself. It requires a lot of manpower to transport it away, which not only does not produce economic benefits, but also increases labor and transportation costs. Earthworms are oligochaete animals of the Annelid phylum. Its biggest feature is a wide diet and the ability to secrete cellulase. It is especially suitable for digesting and degrading fiber-based cow manure or manure. The feces discharged after eating are called earthworm fertilizer. It is ...

AI Technical Summary

Problems solved by technology

However, improper facilities and methods using earthworm digestion and degradation combined with microbial composting and fermentation will still pollute the cattle farm environment and affect the treatment effect and efficiency of cow dung

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