How to prevent early spring fruit frost

Before filling the fruit trees in early spring, irrigating the garden with large water can significantly reduce the ground temperature, delay germination and flowering, thus avoiding the harm of the young trees in the early spring.
Main trunk whitening The trunk whitening is applied at the beginning of each winter or early spring to allow the temperature of the tree to rise and fall slowly, reduce the sunburn and freezing injury, delay the budding and flowering of the fruit trees, thus effectively avoiding early spring frost damage, and simultaneously treat trunk diseases and pests.
Pre-frost irrigation According to the experience, when the low temperature comes 3 to 5 days before the timely irrigation, the best control effect. When the water is poured before the frost, the water temperature is higher than the soil temperature at night. Water can increase the amount of heat in the soil. At the same time, the water can increase the thermal conductivity of the soil, which is conducive to the upward transfer of heat from the deep soil layer.
Smoke, Frost, and Frost In the fruit trees, attention should be paid to the weather forecast, especially at night. When the temperature drops to the freezing temperature of fruit trees, smoke will start to ignite until the temperature rises above the critical temperature for freezing. Lightly moist firewood is used as raw material, or smoke is smoked with anti-frost aerosols. In order to improve the effect of preventing frost, the principle of putting more firewood on the windward and lowering the firewood on the lower wind may be adopted. Generally, 4 to 5 piles per mu of orchard are piled, and each pile is about 25 kilograms of material.
Spraying anti-frost agents Spraying agents that can increase the stress resistance of fruit trees (such as Polyfoam, Baode, and Zhiyingling 83 antagonism agents) after germination of the fruit trees to before flowering, and in conjunction with foliar spray fertilizer, can effectively Prevent frost damage.

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