After the fruit trees are defoliated, the weeds, fallen leaves, fallen fruits, and diseased branches in the orchard should be promptly removed and buried deeply or concentratedly. At the same time, in conjunction with winter pruning, cut off those branches with diseases and insect pests, such as diseased branches, dead fruits, dead fruits, etc. After cutting and cleaning and concentrating on burning, we can eliminate the pests that overwintered above. Deep turning, scraping skin. Generally, the depth of the garden is 30-40 cm. The closer the time is to the soil, the better the freezing effect. At this time, the pest has entered a dormant state and cannot be re-entered into the winter. Scrape the bark to remove the pests and diseases. After scraping the skin, the tree general can be disinfected and the rough hides can be buried or burned. The trunk is white. The calcine is converted into lime milk, and then salt, soy flour, lime sulfur and vegetable oil are added. If a new high fat film and a targeted insecticide are added to the whitening agent, the pest control effect is better.
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