《喜树虫害防治技术研究》是由四川省林业厅下达,省森林病虫防治试验站与大竹、金堂县林业局协作完成的课题,自1988年起,历时3年,于今年通过鉴定。喜树是四川省“四旁”绿化造林的主要树种之一,目前全省已种植6000万株以上。近年来普遍遭受淡色缘脊叶蝉(叉茎叶蝉)和小绿叶蝉危害,被害树叶卷缩枯焦,提早脱落,部份幼树被害后嫩梢枯萎,以致死亡。据调查,全省范围内严重受害早期落叶的占70%,嫩梢枯萎的占13.9%,整株死亡的占3.5%。该课题组采用定点观察和全面调查的方法弄清了上述两种叶蝉是使喜树提前落叶,造成 “Camptotheca acuminata pest control technology research” is issued by the Sichuan Provincial Forestry Department, Provincial Forest Pest Control Experiment Station and Dazhu, Jintang County Forestry Bureau to complete the task, since 1988, which lasted 3 years, this year passed the appraisal. Camptotheca acuminata is one of the main tree species afforestation in “Four Sides” of Sichuan Province. At present, more than 60 million plants have been planted in the province. In recent years, the common suffer from the light-tipped leafhopper (Phyllostachys cicada) and the small green leafhopper damage, the victim leaves scorch, early off, some young trees after the shoots withered wilt, resulting in death. According to the survey, 70% of the early victims of severe decay in the province, 13.9% of young shoots wilt, and 3.5% of the whole plant died. The group using fixed-point observation and a comprehensive survey to clarify the above two kinds of leafhoppers is to advance deciduous trees, resulting in