Animal manure, straw, sludge, domestic refuse and other wastes rich in organic matter can be converted into organic fertilizer through microbial action and composting treatment. Qualified composting should meet certain quality standards.
1.Organic matter plays a major role in soil improvement in compost. The content of organic matter should be more than 35%. Among them, the content of nitrogen, phosphorus and potassium should be 2%, 0.8% and 1.5% respectively.
2.When the compost product is stored, the moisture content should be less than 30%, and the moisture content of bagged compost should be less than 20%. The excessive moisture of fertilizer is easy to cake in storage, and the moisture will be lost in storage. Controlling the moisture content is conducive to maintaining the quality of compost.
3.The compost should conform to the harmless standard. The germs, insect eggs and weed seeds in feces, straws and other materials should be destroyed. The application of organic fertilizer has no harm to the environment, soil and crops.
4.Other materials in compost such as glass, ceramics, scrap metal, stone, plastics, rubber and so on must be removed.
Using organic fertilizer equipment to produce organic fertilizer on a large scale and to process compost industrially reduces the adverse impact of waste on the environment, shortens the cycle of waste processing organic fertilizer, improves the quality of fertilizer, and is conducive to the sustainable development of ecology.