As China has increased the development of agriculture, agricultural and sideline products have been increasingly valued by people. The pollution of livestock manure to the environment is getting more and more serious. However, chicken manure and cow dung are rich in nutrients and trace elements, which are good organic fertilizers. The development of chicken manure and cow manure as a composite organic fertilizer can not only turn waste into treasure, but also reduce environmental pollution, prevent the spread of diseases, and have good economic and social benefits.
Organic fertilizers are rich in organic matter and nutrients needed for crop growth. They not only provide the nutrients needed for crop growth, improve soil, but also improve crop quality, increase crop yield, promote high yield and stability of crops, maintain soil fertility, and increase fertilizer. Utilization, reducing production costs. The rational and rational use of organic fertilizer can increase crop yield, improve fertility, improve the quality of agricultural products, and improve the effectiveness of soil nutrients.