摘要
河曲丝叶蜂在西藏地区发生范围逐步扩散,危害逐年加重,对河曲丝叶蜂的虫口密度进行了调查,结果显示:河曲丝叶蜂以拉萨西郊和曲水聂当乡为核心发生区逐步向四周扩散。2021年向西扩散至曲水县城,向东扩散至达孜县、林周县,向南扩散至山南乃东区、贡嘎县和扎囊县。根据不同防治方法结果显示:最佳的防治方法是初春结合树下土壤管理浅翻表土深15 cm, 8月底采用粘虫胶法,8月20左右和9月初利用4.5%高效氯氰菊酯乳油+激健2 000~3 000倍液各防治1~2次,进行树冠喷雾。
With the gradual expansion of the occurrence range of Nematus hequnsis Xiao in the Xizang region and the damage it causes increa-ses annually,a survey on the population density of Nematus hequusis Xiao was conducted.The results showed that the core outbreak area of Nematus hequnsis Xiao was centered around the western suburbs of Lhasa and Chushur Niedang Township,gradually spreading outwards.In 2021,it spreaded westward to the city of Chushur,eastward to Taktse and Lhundup counties,and southward to Lhoka Nedong District,Gonggar County,and Danang County.According to the results of different control methods,the best control method was a combination of shallow soil tlling under trees to a depth of 15 cm in early spring,using sticky insect glue method at the end of August,and applying 4.5%beta-cypermethrin emulsion mixed with a Jjikian 2000~3000 times solution for 1~2 times around August 20 and early September for crown spraying.
作者
边巴普赤
雷雪萍
Bianbapuchi;LEI Xueping(Institute of Agricultural Sciences,Xizang Academy of Agriculture and Animal Husbandry Sciences,Lhasa Xizang 850032,China)
出处
《西藏农业科技》
2025年第2期53-55,共3页
Tibet Journal of Agricultural Sciences
基金
西藏自治区重点研发计划项目(XZ202201ZY0015N)。
关键词
河曲丝叶蜂
垂柳树
虫口密度
防治方法
Nematus hequnsis Xiao
weeping willow
population density
control methods
