Four simple methods Anti-freezing measures of Pepper seedlings in greenhouse in Winter

Greenhouse chili

During the period of raising pepper seedlings in the winter shed, it is often suddenly attacked by the cold current, the temperature drops suddenly, and the seedlings are vulnerable to freezing damage. The degree of freezing injury to seedlings is also related to the speed of temperature recovery after low temperature. Therefore, the following anti-freezing measures should be taken:

First, the use of artificial temperature control seedling raising methods, such as electric hotbed and factory seedling raising, is the fundamental measure to solve the problem of seedling freezing.

Second, during the low temperature period of rain and snow, make the best use of the sunny interval to remove the grass, so that the pepper seedlings can be exposed to the sun. When it suddenly clears up after the rain and snow stops, cover several grasses on the seedbed around noon to avoid seedling wilting. The humidity of the bed soil is high, and the seedlings are vulnerable to freezing damage, so it is necessary to control the seedling bed watering before the cold wave comes. If the bed soil is too wet, spread a layer of hay wood ash.

Third, increase the application of phosphorus and potassium fertilizer, and use cold-resistant agents at the seedling stage. Spraying 0.5% of brown sugar or 1% glucose solution can enhance the cold resistance of seedlings. 0.5% calcium chloride solution was sprayed twice (7 days apart) at the 3-4 leaf stage to enhance cold resistance.

Fourth, cover the seedbed closely during the cold wave. When ventilating for a short time, it is necessary to prevent cold air from blowing directly into the bed to hurt seedlings. Grass curtains should be added at night. The dead leaves of straw can be scattered on the seedlings and cleared after the cold wave. In a snowy day, after the snow stops, clear the snow out of the pepper nursery ground in time.