Anti-freezing measures of plum trees in winter

Plum is a kind of fruit that many people like to eat, and its planting area is also relatively large in our country. When planting plum trees, we should pay attention to the management according to the changes of seasons. If the management is not good, then all kinds of problems can easily arise. Especially in winter, plum trees can easily get frostbite. So how to prevent the plum tree from freezing in winter? Let's take a look at it with the editor.

1. Irrigation whitening

In winter and early spring, the temperature is very low, when the plum tree is extremely vulnerable to frostbite. In spring, when the plum tree begins to sprout, it can be properly watered to reduce the ground temperature and delay the germination time of the plum tree. It is best to water the plum tree twice after sprouting to blossom, and the flowering time can be delayed by about three days, and if properly watered before frost injury, the tree temperature can be raised appropriately to prevent the tree from freezing injury. If plum trees are painted white in winter, it can not only play an anti-freezing role, but also prevent diseases and insect pests.

2. Enhance the tree potential

Freezing injury will lead to damage to young fruits, leaf tips and other organs of plums. Therefore, we should strengthen the tree potential of plum trees, strengthen fertilizer and water management, and replenish nutrition for plum trees. To enhance the growth and cold resistance and disease resistance of plum trees, more fertilizers should be applied before and after flowering, mainly special fertilizer for fruit trees. It can also be combined with an appropriate amount of potassium dihydrogen phosphate or urea, about once a week. It can not only enhance the growth of the plum tree, but also restore the tree potential after the plum tree is frozen, and increase the fruit setting rate and the weight of a single fruit.

3. Reasonable pruning

After it is found that the branches, leaves and fruits are damaged by frost, we should not rush to prune in a short period of time, but should take the principle of thinning fruit late and leaving as much fruit as possible. Keep some fruits that are not seriously damaged or undamaged, increase the amount of fruit hanging, and minimize the loss caused by frost injury. Then it is necessary to open the branches of the plum tree to restrain the vegetative growth of the plum tree, so that the tree can recover naturally. If the branch can not recover because of frost injury, then it should be built to the robust part of the branch in time, so that it can restore new sprouts and branches as soon as possible. The damaged branches and buds should also be erased to promote the germination of hidden buds.

4. Smoking and anti-freezing

Smoking and anti-freezing is a common method to prevent frost injury in planting plum trees. The effect is mainly based on the quality of raw tobacco, when the orchard temperature is two degrees, the number of tobacco per mu should be kept at least about 5 piles. The height and diameter of the haystack can be maintained at about 150 cm, and then insert a few sticks into the haystack as ventilation holes. Then cover the haystack with a layer of wet grass or wet mud to increase smoke volume and smoke time. Smoke can be used straw, weeds and other substances, in the temperature above minus two degrees, the effect of frost injury is very good, if it is lower than minus two degrees, then it will affect the effect.

The above is a brief introduction to the anti-freezing measures of plum trees in winter. That's all for today's introduction. This article is for reference only. I hope it can help you all.