The main diseases of apple trees in spring include apple powdery mildew, root rot, brown spot and rot. The main insect pests are leaf mites, roundworms, scale insects, golden scales, leaf roller moths and chafers. Fruit rough skin often hide a variety of diseases, such as leaf star caterpillars, cockroaches, rot disease, leaf roller, etc. After finishing the winter cutting work, the rough skin should be scraped off in time, and the depth is suitable. At the same time, the plastic film was placed under the tree and the scraped pests and bark were collected and burned. In conjunction with the scraping skin, it is important to check whether there are rots in the branches, trunks, and saws, and scrape them at any time until the outside of the xylem is white. Followed by a stone-sulfur mixture or 30% rotten enemy 30 times, 15 days and then painted again. Scrape the skin thoroughly, carefully and thoughtfully, leaving no dead ends, can reduce the population density, minimize pathogens, and control the spread of pests and diseases. Clearing the garden in a timely manner, clean the diseased branches, fallen leaves, diseased fruits, and old cracked skins outside the park or deep-buried on the spot. Many pests and disease pathogens are wintering on diseased leaves and diseased branches. Scattered litter is the source of infestation and pests in early winter. Therefore, it should be carried out in the winter and spring. The whole park sprayed lime sulfur mixture once in the middle and late March, and sprayed organophosphate insecticide once before flowering in early April to prevent and control pests such as leafroller, rootworm, scale insect and chafer. Vibrators For Women,Vibrator Dildo Vibrator For Women,Rabbit Vibrator Women,Vibrator Massager Adults Shenzhen Dongchen Hey E-commerce Co.,Ltd. , https://www.xxsexytoy.com