Scrape the bark to exterminate insects. In the rough skin, cracks, and cracks of fruit trees, pests such as Pyrosphaeridae, apple leaf roller moth, date tapeworm, and pear caterpillar are often lurking. Before the budding of the fruit trees in spring, the rough skin on the branches (especially in the tree branches) and the scalp kerfs are completely scraped off, and a large number of overwintering pests can be eliminated. It is advisable to scrape off the light-brown skin and see the green is not white. When scraping the skin, lay a plastic sheet under the tree to collect the scraped bark and debris and concentrate it deeply or burn it. For fruit trees with rot and blight, apply lime sulfur after scraping.
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