How to prevent young pomegranate trees from sprouting in severe winter

The young pomegranate tree shoots refers to the phenomenon that some branches of the tree shrink and die after overwintering. The northern part of China is cold and dry in winter, rainy and windy in early spring, with large evaporation, while the annual growth of pomegranate young trees is large, and the water retention of branch pith is poor. Therefore, if it is in severe winter, it is easy to cause shooting. The technology that will prevent pomegranate sapling to pull out in severe winter is introduced as follows now.

variety selection

The varieties with strong cold resistance should be selected, such as red skin sweet 1, black seed sweet, green skin sweet 1, giant seed honey, Taishan red pomegranate, Tunisia soft seed pomegranate, etc. Some varieties with poor cold resistance cannot survive winter safely in northern China.

Strengthen fertilizer and water management

For young trees planted for 1~2 years, phosphorus and potassium fertilizer should be increased, nitrogen fertilizer should be controlled, and watering times should be reduced during the growth period from July to September, so that the new shoots can stop growing in time and the plants can be fully lignified.

timely topping

In the middle of August, the growth points of new shoots should be removed in time to control the lengthening growth of branches to promote nutrient accumulation. At the same time, the buds sprouted at the top of the branches should be removed in time to ensure that the branches are fully mature and enhance the overwintering ability of the plants.

chemical cold protection

In early August, paclobutrazol 300-fold solution was sprayed on leaves to control the growth of new shoots and promote branch enrichment. After defoliation in November, the cold resistance of the plant could be significantly enhanced by smearing vaseline on the new shoots of the branch. Spraying 5% lime emulsion on tree crown from late February to early March of the following year can delay the active period of shoot cambium and reduce the evaporation of water in shoots.

Buried in the earth for cold protection

For seedlings planted in the same year, the branches of young trees can be bent and buried in the first ten days of November to prevent the branches from losing water and freezing. Generally buried soil thickness of about 30cm, to the early March of the following year will be released from the soil branches.