1. Artificial water spray. Vegetables in greenhouses - Once frozen, spray water on the vegetables in the shed to increase the air humidity in the shed to stabilize the temperature in the shed and suppress the dehydration and volatilization of the frozen tissue of the vegetables to promote the water absorption of the frozen tissue. 2. Shade protection. Set up shading in the shed to prevent direct sunlight from being exposed to freezing to avoid dehydration and shrinkage of frozen tissue and loss of vitality. 3. Let the wind cool. After the vegetables in the greenhouse are frozen, they cannot be immediately heated in a closed greenhouse. Only the temperature in the greenhouse can be slowly increased, and the frozen tissue can absorb sufficient water for dehydration due to freezing, thereby promoting cell activation and reducing tissue necrosis. 4. Strengthen management. After the frozen vegetables are thawed, they must promptly apply the available fertilizers, cut away dead tissue, spray pesticides, and strengthen management.
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