Winter pepper seedlings antifreeze coup
During the winter pepper growing season, it is often attacked by cold currents. The temperature suddenly drops and the seedlings are vulnerable to freezing. The severity of frost damage in seedlings is also related to the speed at which the temperature rises after low temperatures. If the temperature is raised and the thawing is too fast, the seedling tissue may be dehydrated and dried, causing dead seedlings. Pepper seedlings antifreeze measures have the following four aspects.
ways to improve
The use of artificial temperature-controlled seedling raising methods, such as electrothermal hotbeds and industrialized seedlings, is the fundamental measure to solve the freezing problem of seedlings.
Strengthen the cold resistance of the seedlings to prevent the seedlings from being leggy, remove the cover as much as possible before the cold current arrives, and let the seedlings shine more light and exercise. During periods of low temperatures in rain and snow, use weather as much as possible to clear the gaps and allow the pepper seedlings to be exposed to sunlight. When the snow and snow suddenly stopped turning, no more than a few grasshoppers were placed on the seedbed before and after noon to prevent the seedlings from losing water and wilting. Bed soil moisture, seedlings vulnerable to frost damage, so before the onset of cold waves to control seedbed watering, bed soil too wet to sprinkle a layer of hay ash.
Balanced fertilization
P and K fertilizers were added, and cold-resistance agents were used at the seedling stage. Seedlings spraying 0.5% to 1% brown sugar or glucose solution can enhance the cold resistance. Spray 2 times (with 7 days interval) of 0.5% calcium chloride solution in the 3 to 4 leaf stage to enhance cold resistance.
Insulation antifreeze
During the cold wave, the bed was covered closely. When ventilation is performed for a short period of time, cold air must be prevented from directly blowing into the bed. Cover straw at night. The straw leaves can be sprinkled on the seedlings and cleared after the cold wave. The grass cover on the seedbed should be dry. In the snow days, after the snow stopped, the snow was promptly cleared out of the nursery site.
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