Early spring irrigation
Before the fruit trees sprout, use the large water to fill the garden, which can significantly reduce the ground temperature, delay germination and flowering, thus avoiding the freezing cold of young plants in the early spring.
Main white
The main whitening of the winter or early spring every year can slow down the temperature of the tree body, reduce the daily burning and freezing damage, delay the germination and flowering of the fruit trees, thus effectively avoiding the early spring frost damage, and at the same time, treating the tree diseases and insect pests.
Smoked frost
According to the experience of frosting of fruit trees over the years, we should pay attention to the weather forecast after the fruit trees sprout, especially at night, when the temperature drops to the critical temperature of the frozen trees, the smoke will start to smoke until the temperature rises above the freezing critical temperature. Generally, the firewood with larger smoke and slightly damp is used as raw materials, such as wheat straw, fallen leaves, sawdust, etc., or smoked with anti-frost aerosol. In order to improve the anti-frost effect, the principle of placing firewood in the upwind direction and lowering the firewood in the downwind direction is generally adopted. Generally, 4 piles to 5 piles per acre orchard are piled up, and each pile is used for about 25 kg.
Watering before frost
According to experience, timely irrigation is carried out 3 days to 5 days before the onset of low temperature. Before the frost, the water temperature is higher than the soil temperature. The water can increase the amount of heat in the soil. At the same time, the soil thermal conductivity can be increased after irrigation, which is beneficial to the heat transfer in the deep layer of the soil.
Spraying anti-frost
After the fruit tree is germinated to before flowering, spraying the agent that can improve the stress resistance of the fruit tree, and at the same time cooperating with the foliar spray fertilizer, can effectively prevent the occurrence of frost damage. Judging from the investigation and investigation, it is possible to achieve better results by spraying Baolifeng, Baode, Zhilingling 83 anti-reagent, PBD, etc. before flowering.
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