行道柳树蛀干害虫防治的研究

Studies on the Prevention and Control of Boring Pest on the Street Willow's Trunk

作者于1990～1992年对沈阳地区行道柳树发生的主要蛀干害虫进行了调查,进一步观察了发生规律,进行了防治试验。结果表明,光肩星天牛、芳香木蠢蛾、柳蝙蛾的为害率分别为63％、51％和0.8％,其中芳香木蠢蛾为害最重,磷化铝堵寒虫孔熏杀幼虫的防效是:芳香木蠹蛾和柳蝙蛾为100％,光肩星天牛为87.3％。树干基部打孔注50％久效磷和40％氧化乐果防幼龄幼虫的防效是:芳香木蠹蛾为93.3％,光肩星天牛为74％,用久效磷略好于氧化乐果。40％氧化乐果1000倍、20％杀灭菊酯5000倍液杀卵和初孵幼虫施药2次(间隔10d),防效达100％。

Through the investigation of the main boring pest on the street willow's trunk in Shenyang from 1990 to 1992, the writer sobserved their oceuring law and carried out the test to their prevention and control. The result is as follows: The damaging ratio of Anoplophora glabripeanis Motschulsky, Cossus monglicus Erschoff, Phassus excrescens Butler is 63%, 51% and 0.8% respectively. Among them, Cossus monglicus damage seriously. The rate of prevention and control to their larva through stopping their holes with Aluminium phosphide is: Cossus monglicus Erschoff and Phassas excrescens Butler: 100%: Anoplophora glabripennis Motschulsky: 87.3%, through pouring Monocratophos (50%) and Omethoate (40%) inot the tree's bose is, Cossus monglicus Erschoff: 93.3%: Anoplophora glabripennis Motschulsky: 74%, and Monocrotophos is more effective than Omethoate. By spraying Omethoate (40%, 1:1000) and Fenvalerate (20%, 1:5000) 2 times a year to kill their eggs and the just hatcling larva, the ratio is 100%.