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白洋淀是华北平原最大的淡水湖,是我国芦苇主要生产基地之一,芦苇年产量约占全国总产量的20%左右。但是,近年来,由于多年积水的白洋淀连年干涸,致使农业生态发生恶劣变化,造成十几芦苇种病虫偶发,并且日趋猖獗,严重影响了芦苇产量。一、芦苇病虫的发生及危害白洋淀地区新发生的主要芦苇病虫害有芦苇瘟病、芦苇小斑病、芦苇支链孢叶霉病、芦苇锈病和缘毛长突飞虱、条锹额夜蛾、苇户额夜蛾、芦苇草螟、芦苇粉大尾蚜等十几种病虫害。
The Baiyangdian Lake is the largest freshwater lake in the North China Plain and one of the major production bases of reed in China. The annual output of reeds accounts for about 20% of the national total. However, in recent years, as the Baiyangdian Lake that has been flooded for many years has dried up year after year, the agroecosystem has undergone severe changes, resulting in the sporadic occurrence of more than a dozen of reed species and its increasing prevalence, seriously affecting the yield of reeds. First, the occurrence and harm of reed pests Baiyangdian new major reed pests are reed blast, small spot blight Phragmites australis leaf blight, reed rust and hairy hairhopper, Reed female forehead moth, reed grass borer, reed powder, such as a large number of pests aphid.