The impact of promoting organic fertilizer production lines on agricultural economy is mainly reflected in the following aspects:

1. Promote crop growth and increase yield: Organic fertilizer is rich in nutrients and microbial active substances, which can improve crop yield and quality.

2. Increase agricultural sustainability: The production and use of organic fertilizers can help realize the resource utilization of agricultural waste, reduce environmental pollution, and promote the development of agriculture in a more environmentally friendly and sustainable direction.

3. Reduce agricultural production costs: organic fertilizers can partially replace fertilizers, reduce dependence on fertilizers, and reduce agricultural production costs.

4. Improve the market competitiveness of agricultural products: Agricultural products produced using organic fertilizers have stronger competitiveness in the market because of their high quality and environmental protection characteristics.

5. Promote agricultural scientific and technological innovation: The development of organic fertilizer equipment 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. Increase farmers' income: The use of organic fertilizers can improve the yield and quality of crops and increase farmers' economic benefits.

7. Environmental protection and ecological balance: The promotion of organic fertilizer production lines helps to reduce soil degradation and environmental pollution caused by excessive use of fertilizers, and protect and improve the agricultural ecological environment.

To sum up, the promotion of organic fertilizer production lines has had a positive impact on the agricultural economy, not only improving the efficiency of agricultural production and product quality, but also contributing to the sustainable development of agriculture.