How to deal with 1 after freezing injury and irrigate the soil in time. Immediately after the freezing injury, a shallow annular ditch was opened in the tree tray, filled with water, and 300 times of microbial liquid beneficial to the "root ecology" of micro-chelating agent was added to raise the ground temperature and cover the soil.

2. Pruning and shaping of frozen fruit trees should be postponed until after germination. At this time, the position and degree of freezing damage of trees are obvious, and the branches that have been frozen to death and severely damaged by freezing should be cut off. Pay attention to light but not heavy, and keep the leaves alive. For the main branch, if the front part is seriously damaged by freezing, it can be retracted in the intact part to promote the development of new shoots.

3, strengthen the prevention and control of pests and diseases, frozen fruit trees have weakened disease resistance and are vulnerable to pests and diseases, so it is necessary to strengthen prevention. After cutting in spring, 50% carbendazim 800 times solution or Bordeaux solution can be sprayed once to prevent rot.

4. Protect the frostbitten part of the big branches. The frostbitten part of the shady side of the main branch should be scraped off to expose the epidermis and wooden parts. Waxing is needed after disinfection, and the concentration of disinfectant should not be too high.