The solar greenhouses in Baotou City are often affected by cold waves in the middle and late March and mid-November. It is very easy to cause frost damage in greenhouses. To prevent freezing damage, the following measures should be taken:
1. Grasp the time for planting, the soil temperature in the greenhouse is stable at 10°C above 10cm, and the minimum temperature at night can't be lower than 5°C for proper colonization.
2. Aprons in greenhouses, sky tents, and temporary stoves can be used to warm the sheds. The greenhouses are covered with drape, and the heat preservation and heating are increased. The temperature in the greenhouse can be increased by about 5-10, which can resist larger ones. Cold wave.
3, encounter sunny, full of light weather, you can cover the early cover Po curtain, increase lighting hours.
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