1. Strict screening and inspection of raw materials: the raw materials of organic fertilizer are strictly screened and inspected to ensure that they do not contain harmful substances.

2. Safety evaluation: Safety evaluation is required for raw materials such as edible fungus residue, wine lees, kitchen waste, etc., including heavy metal content detection and other harmful substances detection.

3. Harmless treatment: Ensure the harmless treatment of organic fertilizer to prevent harmful substances in raw materials from entering the farmland. This includes high-temperature fermentation of raw materials, chemical treatment or other harmless techniques.

4. Equipment maintenance and maintenance: Regular maintenance and maintenance of organic fertilizer equipment to ensure the safe and reliable operation of equipment to prevent raw material pollution caused by equipment failure.

5. Production site management: Strengthen the management of the production site, ensure the cleanliness and ventilation of the production site, and prevent ash accumulation and dirt from affecting the production process.

6. Avoid illegal addition: Avoid illegal addition of foreign organic matter and chemical fertilizer in the production process to ensure the quality and safety of organic fertilizer.

7. Training and education: Strengthen the training and education of production line operators to improve their safety awareness and operational skills. Through the above measures, the raw material safety of the organic fertilizer production line can be effectively ensured, so as to produce organic fertilizers that meet safety standards and provide high-quality fertilizers for agricultural production.