1. Geographical location: Choosing a site close to the raw material supply site can save transportation costs. At the same time, being close to the consumer market can also help reduce sales costs. In addition, transportation convenience should also be considered, such as being close to roads, railways or ports.

2. Land area: Choose a suitable land area according to the production scale and equipment layout requirements. Generally speaking, organic fertilizer production lines require sufficient space for raw material storage, production equipment layout, finished product stacking and office areas.

3. Land nature: Consider land nature, such as drainage, soil texture, etc. Because wastewater and foul odors may be generated during the production of organic fertilizers, the site needs to have a good drainage system to prevent environmental pollution.

4. Environmental protection: Comply with local environmental protection laws and regulations to ensure that the organic fertilizer production line discharges wastewater, exhaust gas and noise within the permitted range. In addition, it is best to have a certain green belt or isolation belt around the site to reduce the impact on the surrounding environment.

5. Infrastructure: Ensure that the site has the necessary infrastructure, such as water, electricity, gas, etc. This is crucial for the normal operation of the production line.

6. Labor resources: Choosing an area with abundant labor resources can help reduce labor costs and ensure the stable operation of the production line.

7. Policy support: Understand the local government's policy support for the organic fertilizer industry and seek preferential policies, such as land leasing, tax exemptions, etc.

In summary, when choosing a site for an organic fertilizer production line, it is necessary to fully consider factors such as geographical location, land area, land nature, environmental protection, infrastructure, labor resources and policy support to ensure the smooth operation of the production line and the long-term development of the enterprise.