Animal manure, rice straw, sludge, domestic waste and other wastes rich in organic matter can be transformed into organic fertilizer by microbial action and composting. Qualified compost should meet some quality standards.
1. Organic matter plays an important role in soil improvement. The content of organic matter should exceed 35%. The contents of nitrogen, phosphorus and potassium should be 2%, 0.8% and 1.5% respectively.
2. The moisture content of compost products should be lower than 30%, and the moisture content of bagged compost should be lower than 20%. Too much moisture in fertilizer is easy to store and water will be lost during storage. Controlling moisture content is beneficial to maintain compost quality.
3. Composting should meet the harmless standard. Bacteria, insect eggs and weed seeds from manure, straw and other materials should be destroyed. The application of organic fertilizer has no harm to environment, soil and crops.
4. Other materials in composting must be removed, such as glass, ceramics, scrap metal, stone, plastic, rubber, etc.
Using organic fertilizer equipment to produce organic fertilizer on a large scale, industrial processing of compost, reduce the adverse impact of waste on the environment, shorten the waste treatment cycle of organic fertilizer, improve the quality of fertilizer, is conducive to the sustainable development of ecology.
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