1. Irrigate in early spring. Before the fruit is sprouted, irrigating the garden with large amounts of water can significantly reduce ground temperature, delay germination and flowering, thus avoiding freezing damage to young tissues.
2. Main trunk white. In the early spring, the main trunk and the main branch are painted white, which can make the tree temperature rise and fall slowly, reduce the daily burning and freezing injury, delay the budding and flowering of fruit trees, thus effectively avoiding early spring frost damage, and simultaneously treat trunk diseases and pests.
3. Smoke smoke. After the fruit trees sprouted, they noticed changes in the weather. On the eve of the cold wave, smoked tobacco was sprayed with smoke, straw, wheat straw, debris, sawdust, etc. In the windward, more firewood and lower winds can be used to increase the effect of preventing frost.
4. Rinse before the frost. At night, the water temperature is higher than the soil temperature, and water can increase the amount of heat in the soil. At the same time, irrigation can increase the thermal conductivity of the soil, which is conducive to the upward transfer of heat from the deep soil layer. The best irrigation effect is 3-5 days before low temperature comes. Do not scratch after watering.
5. Spray. After the fruit is sprouted to before flowering, spraying pesticides that can improve the stress resistance of the fruit tree, such as PBO enhancer, together with foliar spray fertilizer, can effectively prevent frost damage.
6. Strengthen tree management. Reasonable pruning can promote tree nutrient accumulation and help the tree to resist cold. Rational fertilization and watering, increasing application of organic fertilizers and phosphorus and potassium fertilizers can increase the tree's storage and cold resistance.
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