1. Improved method. The use of artificial temperature control seedling methods, such as electric hotbeds and factory seedlings, is the fundamental measure to solve the problem of seedlings being frozen.
2. Enhance the cold resistance of the seedlings and avoid the growth of the seedlings. During the low temperature of rain and snow, try to use the weather to clear the gap, remove the grasshoppers, and let the pepper seedlings be exposed to the sun. When the rain and snow stopped suddenly, it was covered with a few grasshoppers on the seedbed before and after noon to avoid the loss of water and wilting. The bed soil has a high humidity, and the seedlings are susceptible to freezing damage. Therefore, the seedbed should be watered before the cold wave comes. If the bed soil is too wet, a layer of hay wood ash can be sprinkled.
3. Balance fertilization. Increase the application of phosphorus and potassium fertilizers, and use cold-resistant agents during the seedling stage. The seedlings are sprayed with 0.5% to 1% of brown sugar or glucose solution to enhance cold resistance. Sprayed twice (7 days apart) 0.5% calcium chloride solution at 3 to 4 leaf stage to enhance cold resistance.
4. Insulation and antifreeze. The seedbed is tightly covered during the cold wave. When ventilation is performed for a short period of time, it is necessary to prevent cold air from directly blowing into the bed. Cover the straw at night. Straw leaves can be sprinkled on the seedlings and cleared after the cold wave. On snowy days, after the snow stops, the snow is cleared out of the nursery site in time.
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