The advantages of organic fertilizer production lines in agricultural circular economy are mainly reflected in the following aspects:

Waste resource utilization: The organic fertilizer production line can convert agricultural waste such as livestock and poultry manure and crop straw into high-quality organic fertilizers, reducing the pollution of waste to the environment. The resource utilization of waste has been achieved, reducing resource waste and improving the efficiency of resource utilization.

2. Soil improvement and fertility enhancement: Organic fertilizers can significantly improve the physical properties of the soil, increase soil aggregate structure, and enhance the soil's water and nutrient retention capacity. Organic fertilizers are rich in nitrogen, phosphorus, potassium and various trace elements, which can provide comprehensive nutrients for crops and enhance soil fertility.

3. Reduce reliance on chemical fertilizers: By using organic fertilizers, reliance on chemical fertilizers can be reduced, and greenhouse gas emissions generated during the production, transportation and application of chemical fertilizers can be lowered. The combined use of organic and chemical fertilizers can enhance the utilization rate of fertilizers and reduce nutrient loss.

4. Significant economic benefits: By treating waste through organic fertilizer equipment, the cost of waste disposal can be reduced. Meanwhile, the produced organic fertilizer can be used for farmland fertilization, lowering the cost of chemical fertilizer usage. The produced organic fertilizer can be sold as a commodity, bringing additional income to enterprises or farms.

Through the construction and application of organic fertilizer production lines, not only can agricultural waste be effectively treated and environmental pollution reduced, but also soil quality can be improved, promoting the sustainable development of agriculture and achieving a win-win situation of economic and environmental benefits.