What should I do when the apple tree is frozen?

What happens when apple trees freeze? Also ask experienced netizens to help introduce Freezing damage has always been a common factor in fruit trees, especially apple trees, and apple trees are perennial plants, once frozen damage occurs, its effects are lasting. A series of rot diseases caused by freezing injury also make fruit farmers quite headache, so the planting network sorted out the apple tree after freezing injury treatment methods, listed below for netizens reference. 1. For apple trees with all frozen trunks and complete root systems, the above-ground parts can be sawed off from the ground. From March to April of the following year, grafting was carried out again by cleavage or subcutaneous grafting. If the young tree trunk is frozen, it can be re-cropped, leaving a strong sprout and re-cultivating the tree body. 2. For example, apple trees with good bark account for more than half of the trunk, bridging on the frozen side. If the damage is serious, it must be grafted again. 3. Spray 100 times multi-effect decaying spirit to prevent rot disease on lightly damaged apple trees before germination. After sprouting, scrape off the frozen bark and apply 843 rehabilitation agent or putrefaction star original solution. Disinfect the branches of apple trees with agents for treating rot, such as 9281, tebuconazole, etc., once every two weeks during the growing period. 7~10 days after leaf opening, spray once life element plus a small amount of urea for 4~5 times. When pruning, in addition to cutting off frozen branches, should minimize the wound, with light shear as the principle, slow release of some branches, retraction extended branches in the part of the branch out. 4. Apple buds, terminal buds and lateral buds are all frozen, so it is necessary to increase the amount of fertilizer, timely supply water, promote the germination of hidden buds and accessory buds, and re-cultivate branch groups. 12 pruning methods of apple trees Fertilization methods of apple trees