论文部分内容阅读
1 987年我们在万年县大黄乡一万亩马尾松林进行马尾松毛虫综合防治试验。该县在赣东北中部,属丘陵山区,树龄多在1 5年以下,是松毛虫常灾区。9-10月份在林间采集马尾松毛虫第二代1 00余条3龄以上幼虫,从上表可看出,寄蝇在松毛虫幼虫期至蛹期的寄生率达32—36%。经鉴定为红尾追寄蝇(Exorista xanthaspis)和家蚕追寄蝇(E.sorbillans)两种,其中红尾追寄蝇约占84%。据文献资料报道,红尾追寄蝇是我国南
In 1987, we ran a masson pine caterpillar integrated control experiment on 10,000 mu of Pinus massoniana forest in Dazhuang Township, Wannian County. The county in central and northeast Jiangxi Province, is a hilly mountain area, more than 15 years old, is often affected by pine caterpillars. From September to October, more than 100 second-instar larvae of the second generation of Dendrolimus punctatus were collected in the forest. It can be seen from the above table that parasitic rates of the fly-feeding fly in the larvae to pupae of the pine caterpillars reached 32-36%. It was identified as Exorista xanthaspis and E.sorbillans, of which 84% were red-tailed parasites. According to the literature, red tail chase fly is our country south