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果树在冬眠阶段,其各类病虫害也以不同形式进入越冬期,所以,冬季是防治果树病虫害的一个有利时机,具体做法是: 清扫落叶苹果的褐斑病、灰斑病,梨的黑星病,葡萄的褐斑病、白腐病等病菌,大都藏在被埋入土壤中的落叶和病果中过冬,第二年又成为新的病源。因此,将落叶扫净,作为沤肥或烧柴,是减轻来年病虫害的一个简单而有效的办法。剪除病虫枝苹果炭疽病、葡萄白腐病、桃褐腐病的病菌大部分都在残果枝上越冬。梨瘤蛾、苹果的顶梢卷叶蛾,它们的幼虫也多在枝梢上越冬。只要在冬季结合修剪枝就可有效地消灭这些越冬病虫害。刮树皮和刷白树干苹果、梨的腐烂病、轮纹病、梨小食心虫、星毛虫、苹果的小卷蛾、山楂的红蛾蛛的
Fruit trees in the hibernation stage, all kinds of pests and diseases also entered the winter in different forms, so the winter is a fruit pest control of fruit and a favorable opportunity, the specific approach is: cleaning deciduous apple brown spot, gray spot, pear scab , Grape brown spots, white rot and other germs, mostly hidden in the fallen leaves and fruit trees buried in the soil winter, the second year has become a new source of disease. Therefore, clearing the leaves as a fat or firewood is a simple and effective way to reduce pests and diseases in the coming year. Cut pests and diseases apple anthracnose, grape white rot, peach brown rot bacteria most of the branches in the fruit overwintering. Eupolyphaga, apple tip leaf roller moths, their larvae are more wintering on the shoots. As long as the combination of pruning branches in the winter can effectively eliminate these winter pests and diseases. Scratch the bark and brush white trunk apple, pear rot disease, rotten grain, pears moth worms, cicadas, apple moths, hawthorn moths