(1) Strengthen the greenhouses to prevent the greenhouses from being overwhelmed by heavy snow and ice. In snowy weather, if snow does not damage the greenhouse, it is not advisable to sweep snow in time to prevent serious freezing after heavy snowfall, causing freezing damage to seedlings. After the temperature rises and the snow melts, the seedbed management will be strengthened.
(2) During the freezing period, antifreeze and insulation measures should be strengthened. One is to confine the greenhouses and prevent cold air from intruding into the greenhouse; the other is to add a one-meter-high internal insulation film around the greenhouse to enhance the insulation effect; the third is to cover the seedbed in the greenhouse and cover the straw at night. The fourth is to uncover the cover on the shed during the day and try to increase the light of the seedlings. Within 1 to 2 days, open the shed for a short time before and after noon to ventilate and change the air. Insulation.
(3) After 3 to 5 days after the disaster, strengthen the management of seedlings, fight pesticides one or two times in a timely manner, and prevent and treat serious diseases. Under the conditions of heat preservation measures, gradually increase ventilation and increase ventilation. After sunny weather, apply a 0.5% compound fertilizer to facilitate the growth of the seedlings.
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