What are the techniques for orchard irrigation in winter? What should we pay attention to in winter irrigation?

Pouring frozen wells can accelerate the decomposition of organic fertilizer, which is beneficial to the absorption of minerals by fruit tree roots, thus improving the accumulation of nutrients in trees and benefiting the differentiation and development of flower buds in winter and spring; Determining the irrigation time of fruit trees should be mainly based on the water demand of fruit trees in each phenological period and the soil moisture content at that time. Generally, special attention should be paid to irrigation in four periods.

As the leaves fall, the nutrition of fruit trees will flow back to the roots to increase the growth of the roots, which will provide nutritional reserves for the growth of fruit trees in the coming year. However, the erosion of wind and sand will cause the bare roots, and the loss of water will inevitably affect the loss of nutrition, which will seriously lead to the death of fruit trees. Straws of wheat and corn and leaves of some weeds can also be applied after treatment, stacking and fermentation. In the process of fertilization, the size of fruit trees should be combined with some organic fertilizers with high humic acid content and potassium sulfate. Fruit trees had better not be blindly fertilized.

Fertilization of fruit trees in winter is very important, which is helpful to keep warm, moisturize and maintain supply during hibernation. Especially for fruit trees that have borne fruit in winter, it is necessary to strengthen the application of base fertilizer to ensure adequate nutrients during the wintering period and lay a good foundation for flowering and fruiting in the coming year. The fruit trees that should be applied farm manure in winter are trees with long growth period, and the fertilizer needed can provide nutrients for them continuously. Therefore, the applied fertilizer should be used together with organic fertilizer, compound fertilizer and biological bacterial fertilizer. It is best to apply some oil cakes, which can not only promote the fermentation of fertilizers, but also increase the sweetness of fruits.

In autumn, basal fertilizer should be applied immediately after picking fruits and clearing gardens. Early-maturing varieties can be harvested after the fruits are harvested, and mid-late-maturing varieties can be harvested before the fruits are harvested. The application time should be no later than one month before the defoliation of fruit trees. It is not only the slow absorption of nutrients by the land, but also an important reason. After the autumn harvest, the farmer brothers completed the land fertilization before 65438+ 10/5, and they can go out to work to increase their family income in the rest of the time! Applying pig fertilizer, sheep fertilizer and chicken, duck, goose and rabbit fertilizer to fruit trees in winter not only increases the organic fertilizer of fruit trees. But also has the functions of heat preservation and anti-freezing.