Management techniques of Walnut trees in Winter

The cold tolerance of walnut trees is very poor, if the temperature is relatively low, then walnut trees will have fallen leaves. It has a great impact on the production of walnut trees in the second year. If walnut trees suffer from severe frost damage, it is very likely to lead to death. So how to manage and ensure that it can survive the winter safely in the cold winter season? The following editor brings you the winter management technology of walnut trees. Let's have a look!

1. Rational fertilization

In winter, we should first do a good job in fertilizing walnut trees, which should be based on organic fertilizer. In orchard deep ploughing, combined application as base fertilizer, when applying base fertilizer, we should control the amount of fertilizer according to soil fertility, walnut growth yield and tree nutrition. Under normal circumstances, each 1kg fertilizer needs about 5kg organic fertilizer, and also needs to be combined with appropriate amount of phosphorus and potassium fertilizer. After fertilization, attention should be paid to fully mixing fertilizer with soil to improve fertilizer efficiency.

2. Timely pruning

It is the best time to prune walnut trees after harvest in autumn until the leaves turn yellow and fall. The main purpose of pruning at this time is to adjust the skeleton structure of walnut trees, such as large branches, overlong and dense branches, disease and insect branches and so on. It is best not to prune within one month after the fallen leaves and before the walnut tree sprouts, because these two periods are the bleeding period of the walnut tree, which will affect the healing of the pruning wound.

3. Heat preservation and anti-freezing

As I just said, the cold tolerance of walnut trees is very poor, so heat preservation and anti-freezing work is very important. The commonly used anti-freezing work is basically applicable to walnut trees. Before freezing, we should pay attention to pouring enough frozen water to ensure that walnut trees survive the winter safely. Then the trunk is painted white, the tree is wrapped, and all can be used. In addition, we can also increase the temperature of smoking before the cold spell arrives in winter to reduce the freezing injury of walnut trees.

4. Proper watering

Walnut still has a large demand for water, has a strong waterlogging tolerance, and is not suitable to grow in an arid environment. Therefore, we should also water walnut trees properly in winter to ensure the production capacity of walnut trees in the second year. After applying the base fertilizer, it is necessary to water once to improve the absorption rate of the base fertilizer and speed up the decomposition rate of the fertilizer. Then we have to water the overwintering water well, especially during the winter drought. However, we should pay attention to control the water temperature, not too low, to avoid causing freezing damage to walnut trees.

The above is a brief introduction to the management technology of walnut trees in winter. In addition, we should also do a good job in the prevention and control of diseases and insect pests to avoid affecting the normal growth of walnut trees in the following spring. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.