Organic fertilizer equipment can significantly improve crop stress resistance by producing high-quality organic fertilizers. The following are the specific mechanisms and methods:

1. Provide comprehensive nutrition: organic fertilizer is rich in a large number of elements such as nitrogen, phosphorus and potassium, as well as medium elements such as calcium, magnesium and sulfur and trace elements such as iron, zinc and copper, which can provide comprehensive nutrition for crops and enhance the growth vitality of crops.

2. Balanced nutrient supply: The release rate of nutrients in organic fertilizers is slow, which can continue to provide nutrients for crops and avoid growth problems caused by insufficient or excess nutrients, thus enhancing the resistance of crops.

3. Improve soil structure and increase soil organic matter: organic matter in organic fertilizer can improve the physical structure of soil, increase soil ventilation and water retention capacity, reduce soil compaction, and provide a good growth environment for crop roots.

4. Promote soil microbial activity: microorganisms in organic fertilizers can decompose organic matter, release nutrients, inhibit the growth of harmful microorganisms, reduce the occurrence of diseases and pests, and enhance crop resistance.

5. Improve crop resistance to diseases and pests: Microorganisms in organic fertilizers can activate the crop's immune system and enhance crop resistance to diseases and pests.

6. Reduce the occurrence of diseases and pests: the microorganisms in organic fertilizers can inhibit the growth of harmful microorganisms and reduce the occurrence of diseases and pests, thus enhancing the resistance of crops.

Through the above mechanism, the organic fertilizer produced by the organic fertilizer production line can significantly improve the resistance of crops, enhance the growth vitality of crops and the ability to resist pests and diseases, reduce the use of fertilizers and pesticides, and achieve sustainable development of agriculture.