摘要
本文对杨十斑吉丁虫Melanophila decastigma Fabricius幼虫在树干上的分布、被害与树种、生态环境等方面的研究,阐明其发生规律。利用两种真菌(轮枝镰刀菌Fusarium verticillioides(sacc)Nirenberg-Mitt和球孢白僵菌Beauveriabassiana(Bals)Vuill)野外防治试验,死亡率达50—76％;在初孵幼虫期用50％杀螟松10倍、20倍液喷干试验,杀虫率分别达92.15％、90.75％。
Describes the distribution of the larvae of Melanophile decastigma Fa-bricius on tree trunks, their harm done, damaged species, and the ecological enviroments to illastrate their occurring regularity.A parasitic insect, Tetrastichus sp. and two parasitic fungi, Fusarium verticillioides and Beauveria bassiana were found to be main natural enemies. Experimental results showed that the death rate was 50-76% by control with fungi. Spraying with 10 and 20 times liquid of 50% fenitrothin for control of the first instar larvae on trunks, the death rate reached 92.15% and 90.75% respectively.
出处
《西北林学院学报》
CSCD
1991年第1期28-33,共6页
Journal of Northwest Forestry University
关键词
杨十斑吉丁虫
发生规律
防治
杨树
Melanophila decastigma Fabricius
Occurring regularity
Control
