The importance and necessity of organic fertilizer equipment in the development of modern agriculture is reflected in the following aspects:

1. Improve soil quality: Organic fertilizer produced by organic fertilizer equipment can improve soil structure, increase soil organic matter content, improve soil water retention capacity and aeration, and thus enhance soil fertility.

2. Promote sustainable agricultural development: The use of organic fertilizers can help reduce the negative impact of fertilizers on the environment, reduce the dependence of agricultural production on fertilizers, and promote the development of agriculture in a green and sustainable direction.

3. Improve the quality of agricultural products: Organic fertilizers can provide comprehensive nutrients for crops, improve the quality and yield of agricultural products, and help improve the market competitiveness of agricultural products.

4. Enhance the ability of agricultural risk resistance: The application of organic fertilizer helps to improve the resistance of crops, reduce soil degradation and crop diseases caused by excessive use of fertilizer, and thus enhance the ability of agricultural risk resistance.

5. Promote agricultural scientific and technological innovation: The development of organic fertilizer production lines has promoted the progress of agricultural science and technology, such as the research and development and application of bio-organic fertilizer, and the application of these technologies helps to improve agricultural production efficiency and product quality.

6. Promote farmers' income: The use of organic fertilizers can reduce agricultural production costs, improve the yield and quality of agricultural products, and thus increase farmers' income.

In summary, the development of organic fertilizer equipment is of great significance for improving agricultural production efficiency, protecting the environment, improving the quality of agricultural products and increasing farmers' income.