Causes of striping of young fruit trees and preventive measures

The temperature is cold in winter, most young fruit trees start from the annual branches of the crown, gradually lose water and dry up, this phenomenon is called striping, striping will cause crown deformity, tree shape disorder, resulting in delayed fruit, and in serious cases, all the above ground parts will die. So what is the reason for the striping of young fruit trees? How to prevent it? Let's take a look.

First, the reason for drawing.

Because young fruit trees grow vigorously, stop growing relatively late, and there is a lot of water in the cells and tissues, after being attacked by cold wind in winter, its branches will be drained slightly. When the branches of fruit trees are damaged by the leafhopper in autumn, the cortical tissue of the branches is destroyed, the water retention capacity is reduced, and the striping is caused in spring. Before and after sprouting in spring, the wind is strong, the air temperature is high, the aboveground tissue water evaporation of young trees is large, but the ground temperature is low, the activity ability of roots is poor, the water absorbed can not meet the needs of branches, and the phenomenon of striping will occur.

II. Preventive measures

1. Enhance the water-holding capacity of branches.

In the management of growing season, it is necessary to find ways to enhance the absorptive capacity of roots, which is the basis and prerequisite to prevent young trees from overwintering.

2. Spraying potash fertilizer

Potassium phosphate or potassium dihydrogen phosphate solution can be sprayed every 15-20 days in autumn, which can enhance the photosynthetic intensity of leaves, stop the growth of branches, increase the bound water content of branches, and enhance the water-holding capacity of branches.

3. Pick the heart

15% paclobutrazol can be sprayed during the peak growth period in autumn, which can effectively inhibit the growth of new shoots, increase the content of starch, total nitrogen, soluble sugar and soluble nitrogen and increase the content of bound water in branches.

4. Prevention and control of diseases and diseases

In the whole growing period, it is necessary to strengthen the reproduction of diseases and insect pests and protect the leaves, especially in the later stage, which is of great significance for the maturity of branches and the accumulation of nutrients.

5. Increase water supply

It can be irrigated in winter at the right time, and at this time, one of the important measures to prevent young fruit trees from overwintering is that after freezing in the coming year, the early spring is relatively dry and the soil evaporation is large, and irrigation can also alleviate striping, which is usually watered during thawing. This can not only promote soil thawing as soon as possible, but also replenish soil moisture.

6. Reduce transpiration and water loss of branches.

After years of experiment and production observation, reducing the transpiration loss of branches is the most effective measure to prevent stripping. In the past, the method of lying down and burying the soil was often used, but it was very effective, but it was time-consuming and laborious, and it was very easy to break the branches. Now most of them use plastic film wrapped around branches and anti-steaming protective agents.

The above is the introduction of the reasons and preventive measures for young fruit trees. I hope it can help you. If you want to know more about it, please follow us.