1, improve the soil, fertilize. After organic fertilizer is applied into the soil, organic matter can effectively improve the physical and chemical conditions and biological characteristics of the soil, make the soil mature, enhance the soil fertilizer retention ability and buffering ability, and create good soil conditions for the growth of crops.

2. Improve fertilizer utilization rate. Organic fertilizer contains more nutrients, but the content is relatively low, and the release is slow, while fertilizer has high per unit nutrient content, less components, and the release is fast. The two applications are reasonable and complement each other. The organic acids produced by the decomposition of organic matter can also promote the dissolution of mineral nutrients and fertilizers in the soil. Organic fertilizer and chemical fertilizer promote each other, which is beneficial to crop absorption and improve fertilizer utilization rate.

3. Increase production and improve quality. Organic fertilizer contains rich organic matter and a variety of nutrients to provide nutrients for crops. After the decomposition of organic fertilizer, it provides energy and nutrients for soil microbial activities, promotes microbial activities, accelerates the decomposition of organic matter, and produces active substances that can promote crop growth and improve the quality of agricultural products.

Regardless of the history of fertilizer, biological fertilizers such as cow manure and organic fertilizers continue to advance. Microorganisms have the function of providing plant nutrition (such as nitrogen fixing genes, etc.), but they may not have the ability to decompose pollution (that is, genes that decompose substances).