论文部分内容阅读
马尾松毛虫(Dendrolimus punctatus walker)是我国南方松林的主要害虫。1974年,在广州市郊龙洞地区采集到马尾松毛虫质型多角体病毒(DPCPV),多角体呈六边形的廿面体,大小为0.5至6微米。病毒粒子廿面体,直径为42—56毫微米。经过十年的研究证实,DPCPV致病力高,对3—4龄幼虫的LC_(50)为2.5×10~5PIB/ml;林间防治试验四万余亩,平均杀虫率达70％以上;持效控制作用达5—6年;应用技术简便,可用松毛虫幼虫生产病毒,成本低;对脊椎动物无病原性及致畸作用。为防治马尾松毛虫提供了一种有效的生物防治手段。
Dendrolimus punctatus walker is a major pest in the pine forests of southern China. In 1974, DPCPV was collected from the Longdong area in the suburbs of Guangzhou. The polyhedron was hexagonal icosahedron with a size of 0.5 to 6 microns. The virus particle is a capillarity with a diameter of 42-56 nm. After 10 years of research, DPCPV showed high pathogenicity. LC_ (50) of 3-4th instar larvae was 2.5 × 10 ~ 5PIB / ml. The control experiment was more than 40,000 mu and the average insecticidal rate reached more than 70% ; The role of the control effect of up to 5-6 years; application of technology is simple, the virus can be used Dendrobium larvae, low cost; non-pathogenic and teratogenic effects on vertebrates. It provides an effective means of biological control for the control of Dendrolimus punctatus.