Causes and control measures of pomegranate trees

Pomegranate trees are relatively common, especially in winter and early spring, the twigs are very easy to be frostbitten, and in spring they are easy to lose water and die, which seriously affects the flower bud differentiation of pomegranate and causes a serious blow to the yield. So what is the cause of pomegranate stripping? Come and have a look with the editor.

First, the cause of drawing.

Pomegranate branches rarely take place in winter, usually in early spring, the branches will wrinkle longitudinally and develop from the upper to the lower parts of the branches, forming the death of the branches from the top to the bottom. Moreover, due to the drought in early spring and the often dry northwest wind, the striping is more serious, on the contrary, it is lighter. The real reason for striping is caused by freezing and drought, the northern region is cold in winter, underground soil freezes in winter and early spring, and before the distribution of young trees' roots, most of them are in the permafrost layer, and the roots can not absorb water or absorb less water. On the other hand, the temperature in early spring rises quickly, and the wind is strong and the air is dry, the water loss of branches is fast, and the roots can not keep enough water similarly, resulting in obvious imbalance of water, so the branches are physiologically clean and branches are sprouted.

II. Prevention and control measures

1. Variety selection

Varieties with strong cold resistance should be selected when planting, such as Hongpi Tian 1, Heizi Tian, Qingpi Tian 1, and so on. In addition, local climatic conditions should also be taken into account when planting, for example, varieties with poor cold resistance should not be planted in the north, which is not conducive to overwintering.

2. Strengthen the management of fertilizer and water

For the young trees planted for 1-2 years, the phosphorus and potassium fertilizer should be applied in time during the growth period from July to September every year, the application of nitrogen fertilizer should be controlled, and the watering times should be reduced appropriately, so as to restrain the growth of new shoots and make the branches fully lignified. In this way, it can resist low temperature freezing injury and dry wind.

3. Pick the heart at the right time

In the middle of August, the growing points of new shoots should be removed in time, the growth of branches should be controlled to promote the accumulation of nutrients, and at the same time, the young buds should be removed in time to ensure the full maturity of branches and enhance the cold resistance of plants in winter.

4. Chemical protection against cold

In the first ten days of August, the leaves were sprayed with 300-fold liquid to control the growth of new shoots and promote the enrichment of branches. after falling leaves in November, Vaseline was smeared on the new shoots, which could improve the cold resistance of plants. Spray the crown with 5% lime milk from February to March in spring, which can delay the active period of branch cambium and reduce branch transpiration.

5. Bury the earth to guard against the cold

For the planted seedlings, the branches of the young trees can be bent down and buried in the soil in the first ten days of November to prevent the branches from losing water and freezing. The depth of the buried soil is about 30 cm, and the branches will be released in the first ten days of March of the following spring.

The above pomegranate tree reasons and control measures are introduced, hope to help you, want to know more related knowledge, please follow us.