What is the effect of freezing injury on pear trees? How to avoid frostbite

There are many kinds of fruits on the market now, and pears have always been a popular category, with a large market sales, and the number of people who specialize in growing pears to make money is gradually increasing.

In the process of pear tree planting, it is easy to suffer from freezing injury, which will affect the growth of pear trees. What are the main hazards? What measures can be avoided? Next, Bian Xiao will tell you!

1. What harm does freezing damage do to pear trees?

1, the damage of three kinds of freezing injury to pear trees is also different. For example, freezing injury in early spring usually damages the buds of pear trees and even browns the bud base, thus reducing the quality of flower buds of pear trees. In severe cases, it will lead to browning of bud base and then slowly die. In more serious cases, the whole flower bud will die, which will seriously affect the normal germination, flowering and fruit setting of pear trees.

In addition, the freezing injury in early spring will also harm pear flowers, and the style will turn brown when the freezing injury is light, which will affect the normal pollination and fruit setting; When the frost damage is serious, it will cause the whole flower to wither and die, and lose its normal function.

Freezing injury in early spring is more harmful to young fruits of pear trees, especially the calyx end of young fruits. When illuminated, there will be brown bands at the end of calyx, which will affect the quality of fruit. When it is serious, it will cause small fruits to brown and drop early.

2. The frost damage after autumn will mainly harm the branches of pear trees, which is less harmful than the other two kinds of frost damage, but it is very harmful to the trunk of young trees, which often leads to the death of young trees.

Generally, the cambium of branchlets becomes brown necrosis after being damaged, which leads to the weak growth of branches; Heavy will cause the whole branch to die, which will seriously affect the tree potential.

3. The freezing injury in late winter mainly harms the trunk and trunk of pear trees. When the branches are damaged, the surface tissue of the bark will turn brown, and the cortex at the base of the trunk will burst, which will easily lead to rot, slow growth and weakness of the branches, which will lead to a decline in yield. In severe cases, it will cause browning and death of internal and external tissues of bark tissue, leading to the death of branches, and then the whole pear tree will die.

Second, measures to avoid freezing injury of pear trees

1, strengthen pear cultivation management and enhance tree potential.

In the daily cultivation of pear trees, organic fertilizers such as green manure and farmyard manure should be applied as much as possible to enhance the tree vigor, scientifically control the fruit yield and pay attention to the prevention and control of pests and diseases. All cultivation management is based on strengthening the tree potential, which will naturally improve the frost resistance of trees, which is very effective in preventing and controlling freezing injury. In addition, watering in early spring can delay the rise of ground temperature, avoid the sudden change of temperature difference, and may also avoid the harm caused by cold in late spring.

2. Take anti-freezing measures

In the season when the temperature drops, fruit farmers should always pay attention to the weather forecast, especially when there is a cold current, and take cold-proof measures for orchards and fruit trees, such as putting smoke in the garden and spraying water on the trees.

For areas prone to freezing injury at the end of winter (such as pear tree cultivation areas in the north), quilts can be used to cover trees or the whole orchard with cold-proof materials to prevent freezing injury at the end of winter and avoid freezing injury caused by low temperature.

After reading the above contents, we can know that the frost damage of pear trees is still very harmful, which may lead to early fruit drop or death of pear trees, so it is necessary to prevent it in time and early.

The above small series share with you some measures to avoid freezing injury of pear trees, which you can learn from.