When is it better for fruit trees to shave? What are the anti-freezing measures for fruit trees in winter?

In recent days, the sudden drop in temperature across the country is like a "winter scene", which is undoubtedly a survival challenge for fruit trees. So when is it better to shave the fruit trees? What are the anti-freezing measures for fruit trees in winter?

With the increase of age, the bark thickens and lacks extensibility, which hinders the thickening and growth of the trunk and is easy to make the tree premature senescence. And the cracks in the old bark are the overwintering places for many diseases and insects. Therefore, scraping off the old skin and concentrated burning can not only eliminate diseases and insect pests, but also promote tree growth and restore tree potential. The kinds of fruit trees suitable for scraping are: pear, apple, chestnut, jujube and so on.

Peaches and apricots are easy to flow glue after scraping, so they are generally not suitable for use. The time of scraping bark can be carried out during the dormant period in warmer climates.

In order to prevent frost injury in cold areas, it is generally carried out after the severe cold period to before the sprouting of fruit trees. It is required to scrape off the cracked cortex of the old bark, and avoid too deep injury to the tender bark and xylem. If there are disease spots when scraping, scraping and disinfection should be carried out in accordance with the requirements of disease control. Apply protective agent immediately after scraping the bark. The scraped bark must be cleaned in time and burned.

Measures to prevent Frost injury of Fruit trees

Breeding cold-resistant varieties is the most fundamental and effective way to prevent frost; suitable planting according to local conditions is the most important, local main developed tree species should be strictly selected, and the main species should be able to ensure higher yield year after year; cold-resistant cultivation is the use of cold-resistant cultivation methods, which can improve the cold resistance of plants in a certain range.

For fruit trees dominated by root freezing injury, such as grapes, cold-resistant rootstocks can be grafted to directly improve root resistance. The method of planting in deep trench can also be used to reduce the freezing injury of root system and strengthen the protection of tree overwintering.

In addition to the above measures, the method of overwintering protection can be adopted if necessary. For example, soil cultivation of whole plant, trunk of big tree, creeping cultivation and so on within 3-4 years after planting. Others, such as: covering, setting up wind barrier, wrapping grass, painting white and so on, all have certain effect, which can be selected according to the specific situation.

The composition of the whitening agent varies from place to place. The commonly used formula is: 10 parts of water, 3 parts of quicklime, 0.5 parts of raw liquid of stone-sulfur mixture, 0.5 parts of salt, and a little oil (animal and vegetable oil). When painting white, you can use a brush to brush evenly on the base of the trunk and the main branch.