The first is to promptly grab some vegetables, avoid freezing damage and snow pressure, and ensure the supply of vegetables for the Spring Festival. The second is insulation and antifreeze. Greenhouse vegetables should be covered with straws, non-woven fabrics, shade nets or multi-layer coverings and other insulation measures, with emphasis on ensuring the safety of nursery sheds, and emergency conditions such as electric heating and candlelighting can be used to meet emergency conditions. Cover rice straw, shade nets, etc. to reduce the occurrence of frost damage. The third is to catch snow in time to prevent the collapse of the greenhouse. In greenhouses, measures should be taken to reinforce and remove snow in the shed, and special personnel should be responsible for the protection. In particular, the snow on the shed should be removed in time. Conditions can be taken to increase snow temperature and other measures to take measures, such as artificially less than snow, can take measures such as membrane protection shelters and other emergency measures. The fourth is to strengthen post-disaster field management. After freezing and snow, depending on the weather, remove snow in a timely manner to prevent melted snow from pouring back into the shed, and perform management measures such as ventilation, light and humidity control, spraying and disease prevention, and thin application of foliar fertilizer to enhance plant resistance. Strictly control the watering and reduce the humidity in the greenhouse.
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