There are several important necessities for purchasing and using organic fertilizer equipment:

1. Resource reuse: Organic fertilizer equipment can effectively process manure and organic waste generated by farms or livestock farms, and convert it into organic fertilizer.

2. Soil improvement: Organic fertilizer can improve soil structure and increase soil organic matter content, improve soil water and fertilizer retention capacity, improve soil aeration and drought resistance, which is conducive to plant growth and yield improvement.

3. Reduce dependence on chemical fertilizers: The use of organic fertilizers can reduce the dependence on chemical synthetic fertilizers, thereby reducing the use of chemicals in agricultural production and reducing the impact of chemical residues on the environment and human health.

4. Improve the quality of agricultural products: Organic fertilizers are rich in trace elements and organic matter, which can improve the taste, nutritional composition and disease resistance of crops, and produce more healthy and nutritious agricultural products, which meet the needs of the market and consumers.

5. Environmental protection and sustainable development: When organic fertilizer production line treats manure, it can effectively reduce the emission of odor and pollutants, and reduce the negative impact on the surrounding environment. This is in line with the concept of sustainable agricultural development and helps to protect water resources and soil quality.

6. Comply with legal and regulatory requirements: In some areas, the use of organic fertilizers and organic fertilizer equipment may meet the requirements of the government's environmental protection and agricultural policies and regulations, avoiding possible fines and legal liabilities.