1. Do a good job of insulation work, insist on early exposing the late cover grass, and timely close the tuyere to ensure that the plant grows at a suitable temperature.
2. Seedling greenhouses to strengthen the insulation and warming measures, management and protection of the recent preparation of planting seedlings to prevent aging.
3. Fire chlorothalonil, procymidone, pyrimethanil and other aerosols in a solar greenhouse to prevent disease, increase temperature, and reduce humidity. In the evening, after the grass cover is lit, the amount of fumes per acre is 200 g. When used, aerosols were evenly placed on the aisles in the back of the greenhouse and ignited from the inside to the outside. The air was allowed to enter the shed after 2 hours of ventilation the next day.
4. During the snowfall or the shade of the day, the grasshoppers should be uncovered and the vegetables should be scattered. In the snowfall days, the snow falls directly on the shed film to prevent the snow from falling on the grasshopper and increase the weight, causing the shed body to collapse.
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