In the winter, some pests and germs have passed winter under the trees. Especially on trunks one meter above the ground, many insect pests and germs have accumulated. The old cracks on the trunk of the old trees can be scraped and burnt to destroy the pests and germs. Small trees do not have to scrape skin, just white. Whitening agent with 20 kg of lime powder, half a catty of kerosene, half a catty of salt, half a catty dichlorvos, add some bean noodles, add water to reconcile. Http://Content/a33e1e42-e4c9-4884-8a83-88056ec88e19?cType=2
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