② Scrape off the diseased spots. At the first sight of the lesion, the affected area should be scraped off immediately until it reaches the healthy tissue, and then the wound should be smeared with Bordeaux solution (1: 2: 3), that is, copper sulfate, quicklime and fresh cow dung mixed into ointment or 70% thiophanate-methyl wettable powder 200 times. Cut off the lower part of the dead branches at 20 ~ 30cm, and apply the medicine to the wound.
(3) Clear the garden in winter, combine pruning and shaping, remove diseased branches and burn them centrally.
(4) Fruit preservation. In addition, attention should also be paid to timely prevention and control of borers such as longicorn beetles, and careful operation in the field to reduce wounds or mechanical injuries.