As the saying goes: “The orchards do not have winter irrigation, they are cold and they are affected by drought; the orchards irrigate winter water and open the spring.†This means that the orchards are best to pour water once before the soil is frozen, and winter irrigation is also called irrigation of winter water. 1. Winter irrigation of fruit trees can improve the cold resistance of fruit trees and ensure the safe wintering of fruit trees. The winter irrigation of fruit trees can accelerate the maturity of organic fertilizers, which is beneficial to the absorption of minerals by roots, increase the accumulation of nutrients by trees, increase the water content of soil, prevent spring drought, and increase the yield and quality of fruit trees. 3. Prevent drought. Winter irrigation and storage of water in the soil can not only improve the frost resistance of fruit trees, but also prevent winter and early spring drought. Winter irrigation increases the soil moisture, which can ease the contradiction between transpiration and water supply in winter, and can avoid dry freezing of fruit trees caused by physiological water loss. At the same time, due to the increase of soil moisture content, it is conducive to the absorption of water and nutrients by roots, thus increasing the frost resistance and drought resistance of fruit trees. 4. Can eliminate wind erosion. In winter, when the wind is dry, it is often the case that the wind blows the soil, the roots of the trees are exposed, and the frost damages the trees. The slope hilly land is light in soil, loose in soil, and poor in cohesion, while the winter irrigation can use soil in a wet state to prevent the wind from blowing in the soil, and retain moisture and prevent freezing.
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