Spring cherry antifreeze technology
1, delayed flowering
Spraying 100 mg/day of GA3 before the fall of the previous year can delay flowering for 8-10 days. Irrigation before flowering can postpone the flowering period by 2-3 days.
2, smoke method
Smoke fumes can reduce the radiation emission of soil heat and absorb the water in the atmosphere, so that the water vapor condenses into a liquid to release heat, increase the temperature, reduce or avoid frost. Commonly used materials are branches, sawdust, weeds, leaves, corn stalks, wheat straw, wheat bran, etc., stacking 3-4 heaps every 666.7 square meters. When the temperature reaches or approaches 0°C, the grass can be ignited and covered with a certain amount of wet grass on the ignited grass, causing it to emit heavy smoke.
3, irrigation method
Watering immediately before and after flowering can reduce the risk of frost.
4, spray method
Before the onset of frost, spray the water on the fruit trees with a large spray equipment, which can play a role in increasing the temperature and preventing frost.
5, spraying antifreeze method
At present, anti-freeze agents that can be used in the production of fruit trees include "Crustacean" and "Tianda 2116", which are sprayed once before and after flowering. The spraying concentration is 600-800 times liquid. It is best to spray it alone. It is best to mix it with other pesticides. It is best to do a few tests first. After confirming that there is no reaction and no precipitation, mix and spray.
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