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. Therefore, the promotion and application of organic fertilizers in China is in line with the requirements of “accelerating the construction of a resource-saving and environment-friendly society”, promoting the harmonious development of agriculture and resources, agriculture and the environment, and between man and nature, and promoting the safety and cleanliness of agricultural products from the source. Production and protection of the ecological environment are of great significance. With the improvement of people's living standards, the demand for safe and sanitary non-polluting organic and green foods is increasing. The majority of farmers urgently need to apply organic fertilizer to improve the market competitiveness of agricultural products.
The state attaches great importance to the production of organic fertilizers. In recent years, it has given a tilt in policy to support its development. Starting from June 1, 2008, according to the documents of the Ministry of Finance and the State Administration of Taxation, bio-organic fertilizer products are completely tax-free. The government has also subsidized organic fertilizer projects for several years. Not only that, the state has also launched related programs and policies such as “Non-pollution Food Action Plan”, “Green Food” and “Organic Food” certification, and the quality and safety control of agricultural products has also driven the market demand for organic fertilizer to some extent.