In the process of organic matter fermentation, water, oxygen content, temperature, C/N ratio, pH are the key factors in compost fertilizer production. Attention to these conditions will help to improve the quality of composting.
1.In compost fertilizer production, the main water regulation is adding water. The composting materials can be soaked first, and the dry materials such as straw and mushroom residue can be mixed with wet materials such as feces. It is advisable to keep the moisture content between 60% and 70%.
2. In the early stage of compost fertilizer production, air conditioning is used to aerate by inserting crop stalks in the central part of composting. In industry, compost turning machine is used to turn evenly, which ensures the quality of maturity and promotes the formation of humus.
3. In compost fertilizer production, a large amount of heat is often released by microorganism decomposition to improve composting temperature. It can also use compost turning machine turn materials to promote aerobic fermentation, or heat preservation of mud outside the compost. Horse manure is a kind of thermal material. It can also be added to increase the temperature.
4. Adjusting the C/N ratio of compost. When composting with mature crop stalks or materials containing more cellulose and lignin, proper amount of nitrogen fertilizer (equivalent to 1%-2% of composting materials) must be added to adjust the C/N ratio of raw materials. The C/N ratio of composting is best at 25-30.
5. Adjusting the pH of the compost. In compost fertilizer production, a certain amount of alkaline substances (such as lime, grass ash, etc.) should be added to adjust the acidity and alkalinity, adding 1-1.5 kg of straw every 50 kg. At the same time, the compost produced in this way has the function of keeping water and fertilizer in the soil.