粗鞘双条杉天牛林间死亡规律的研究  

A Study of the Death Law of Semanotus sinoauster in Forest

作　　者：杨伟[1] 周祖基[1] 曾垂惠[2] 杨德敏[2] 叶伟军 李才进 

机构地区：[1]四川农业大学 [2]重庆市森林病虫防治检疫站 [3]国营泸县林场 [4]泸州市林业局

出　　处：《四川林业科技》1998年第3期9-13,共5页Journal of Sichuan Forestry Science and Technology

摘　　要：研究表明在四川省泸县林场粗鞘双条杉天牛卵至越冬成虫的死亡率为８２．３５％，各虫期死亡率为卵１３．３３％，初期幼虫５５．３８％，中、后期幼虫５３．９０％，蛹及越冬成虫很少死亡。致死因子包括寄主抗性、捕食性天敌昆虫、寄生性天敌昆虫、病原微生物、种内竞争共５类１３种。分析主要致死因子为杉木树脂、两色刺足茧蜂、川硬皮肿腿蜂、病原菌对粗鞘双条杉天牛种群的自然抑制作用及防治中的应用前景和意义。The research showed that the accumulative mortality of Semanotus sinoauster (Gressitt) in the forest in Luxi an of Sichuan Province was 82.35% from eggs to overwintered adults The mortality of eggs,early larvas and middle or late larvas was 13.33%,55.38% and 53.90% respectively.Pupas and overwinterred adults rarely died.There were 13 kinds of death causing factors which were summarized as 5 sorts including host resistance,predators,parasitoids,pathogenic microorganisms,and specific rivalry.The natural suppression effects of the important deadly factors—resin, Zombrus bicolor,Scleroderma sichuanensis Xiao,pathogen on the population of S.sinoauster were also analysed.

关 键 词：粗鞘双条杉天牛 自然死亡 致死因子 

分 类 号：S763.380.1[农业科学—森林保护学]