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稻飞虱是四川南部稻区水稻生产上为害最严重的迁飞性害虫之一。泸州是四川稻飞虱的常发区,重灾区。20世纪80年代前,本地区稻飞虱以褐飞虱为主,间隙暴发为害。自20世纪80年代初始,白背飞虱种群数量不断上升,已取代褐飞虱成为本地区稻飞虱的主要虫种,暴发频率显著增加,到90年代几乎间隔1年大发生1次。2000年后,泸州南部稻区(叙永县、古蔺县及合江县南部)白背飞虱几乎年年偏重至大发生(表1),已成为影响本地区水稻生产的重要经济害虫,必须加强监测控制,减轻其为害损失。
Planthopper is one of the most harmful migratory pests in paddy rice production in southern Sichuan. Luzhou is a common area of Sichuan planthopper, hardest hit. Before the 1980s, Nilaparvata lugens (Nilaparvata lugens) was the main source of Nilaparvata lugens (Nilaparvata lugens) in the region, with outbreak of gap being the main cause. Since the early 1980s, the population of Sogatella furcifera has been on the rise, replacing the Nilaparvata lugens (Nilaparvata lugens), which has become the major pest of planthoppers in the region. The frequency of outbreaks increased significantly and occurred almost once a year in the 1990s. After 2000, white-backed planthoppers (Sogatella furcifera) in southern Luzhou Prefecture (Xuyong County, Gulin County and southern Hejian County) have been heavily weakened annually (Table 1) and have become important economic pests affecting rice production in the region. We must strengthen monitoring and control to reduce its damage.