Method for preserving nitrogen in compost in manure fermentation

Abstract

The invention discloses a compost nitrogen conservation method in manure fermentation, which comprises the following steps: firstly, carrying out microwave loosening treatment on raw materials such as straw materials to fulfill the aim of loosening and sterilizing the raw materials, promoting white-rot fungi to fully obtain nutrients for growth of the white-rot fungi, and increasing the content of extracellular enzyme secreted by the white-rot fungi in a fermented material through primary fermentation; then mixing with fresh livestock and poultry manure and the like for secondary fermentation, and directly degrading antibiotics such as tetracycline in the fresh livestock and poultry manure by utilizing extracellular enzymes of white-rot fungi, so that the residues of the antibiotics in the livestock and poultry manure are effectively reduced; in addition, turf and calcium superphosphate are added into the fermentation material, so that nutrient balance of microorganisms in compost is facilitated, metabolism of the microorganisms and decomposition of organic substances are effectively promoted, rapid decomposition of nitrogen-containing compounds in the initial fermentation stage is promoted, the volatilization intensity of ammonia is reduced, the nitrogen preservation effect is achieved, and the quality of compost products is improved.

Description

technical field [0001] The invention relates to the technical field of organic fertilizer production, in particular to a method for composting nitrogen preservation in manure fermentation. Background technique [0002] In recent years, with the improvement of people's living standards, the demand for animal food is increasing, and the production scale of feed mills and farms is expanding. Driven by economic interests, in order to prevent disease outbreaks and promote animal growth, antibiotics It is widely used. With the application of livestock and poultry manure organic fertilizer, it will gradually destroy the ecological environment balance of farmland, cause potential harm to the quality and safety of agricultural products, and affect human health. [0003] In order to use livestock and poultry manure efficiently and safely, an effective way is to compost the livestock and poultry manure before it is used in agriculture, and use microbial fermentation to decompose the co...

AI Technical Summary

Problems solved by technology

[0004] However, high-temperature composting generally suffers from severe nitrogen loss, which not only reduces the nutrient content of fertilizers, but also causes the loss of nutrient resources, thereby polluting the environment. Therefore, how to control the nitrogen loss in composting is a key issue in high-temperature composting. The heating and high temperature stages of composting are the main periods of nitrogen loss, and the loss is mainly through the volatilization of NH3. How to reduce the volatilization of NH3 during the high temperature period is the key to the nitrogen preservation measures of high temperature composting