A: The pear tree scraping old skin is a measure to remove overwintering pest parasites. Common scrapers and other available tools are usually used. The skin-skinned objects are pear trees more than 10 years old, and the main branch and dry cortex will have different degrees of cracks. Therefore, scraping should be carried out. When scraping the skin, it is necessary to scrape it from the top to the bottom so that the operation is appropriate. At the same time, care must be taken not to injure the phloem. In order to protect the trunk and reduce pests and continue parasitic damage, after scraping the skin, the dander should be collected and burned in time. The main branch should be promptly treated with lime 10 kg, salt 2 kg, sulfur powder 1 kg, animal or vegetable oil 0.1 kg, water 20 The whitening agent formulated in kilograms is whitened, and Bordeaux's liquid is sprayed in full to better exert the effect of scraping. Http://Content/7c870cee-5991-46f8-a956-704c5b09f26a?cType=2
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