The development trend of cow manure organic fertilizer production line is mainly concentrated in the following aspects:

1. Technological innovation and automation: With the progress of science and technology, cow manure organic fertilizer production lines tend to be automated and intelligent. This includes automatic control of crushing, fermentation, granulation and other links to improve production efficiency and product quality.

2. Comprehensive utilization of resources: More and more production lines begin to pay attention to energy consumption and waste utilization, trying to convert waste in the production process into resources, such as through heat recovery, reuse of organic materials and other ways to achieve comprehensive utilization of resources.

3. Environmental protection and sustainable development: The improvement of environmental protection requirements has promoted the development of the production line in a more environmentally friendly direction, such as reducing the emission of odor and pollutants, and adopting more environmentally friendly production processes and organic fertilizer equipment.

4. Product diversification and market demand: As consumer demand for organic agricultural products and environmentally friendly fertilizers increases, the production line also tends to diversify, able to adapt to the needs of different types and sizes of farms, providing customized products and services.

5. Cooperation and integration: The development of production lines also promotes the integration and cooperation of the industrial chain, such as close cooperation with farms and sales channels, forming a complete supply chain from production to sales, improving the overall efficiency and competitiveness.

In general, the development trend of cow manure organic fertilizer production line is toward intelligent, environmental protection, resource utilization and market-oriented development, in order to adapt to the increasingly complex and stringent market and environmental requirements.