The key control point of organic fertilizer production line in the production process to ensure product quality mainly includes the following aspects:

1. Raw material selection: Choosing high-quality raw materials is the first step to ensure the quality of organic fertilizer products. It should be ensured that the raw materials are free of harmful substances and meet the production standards of organic fertilizer.

2. Fermentation process: Fermentation is a key step in the production process of organic fertilizer. Fermentation temperature, humidity, ventilation and pH need to be controlled to ensure adequate decomposition and maturation of organic materials.

3. Pollutant control: In the production process, the content of heavy metals, harmful microorganisms and other pollutants should be strictly controlled to ensure that the final product is safe and harmless.

4. Product testing: Regular quality testing of products, including nutritional composition, moisture content, pH value, heavy metal content, etc., to ensure that products meet national standards.

5. Packaging and labeling: The packaging and labeling of the product should be clear and accurate, without misleading descriptions, to ensure that consumers can understand the correct information of the product.

6. Process control: The entire production process should follow a strict process, including raw material treatment, fermentation, drying, crushing, screening, mixing, granulation and other steps, each step needs precise control to ensure product quality.

7. Equipment maintenance and cleaning: Regular maintenance and cleaning of organic fertilizer equipment to prevent equipment failure and cross-contamination to ensure production continuity and product quality.

Through the strict management of the above control points, the product quality of the organic fertilizer production line can be effectively guaranteed to meet the needs of sustainable agricultural development.