应用管氏肿腿蜂防治双条杉天牛技术研究  

Control techniques against Semanotus bifasciatus with Scleroderma guani

作　　者：王小军 郭桂凤 

机构地区：[1]密云县林业局,北京密云101500

出　　处：《中国森林病虫》2007年第4期28-29,34,共3页Forest Pest and Disease

摘　　要：2001—2005年北京市密云县进行了管氏肿腿蜂防治双条杉天牛技术的研究与推广,5 a放蜂1200万头,累计防治面积3000 hm2。管氏肿腿蜂5 a平均寄生率达69.68%,寄生率随着放蜂密度的增加而增加。林内放蜂后侧柏的被害率由放蜂前22.78%下降到0.49%;被害木虫口密度由25.4头/株下降到3头/株,下降率88.2%;被害木管氏肿腿蜂密度由放蜂前的0.2头/株上升到2005年的2.5头/株,基本达到有虫不成灾。The techniques of releasing Scleroderma guani against Semanotus bifasciatus were studied and popularized in Miyun from 2001 to 2005, During the period, 12 million wasps were released and the accumulated control area reached 3 000 hm^2. The average parasitization of Scleroderrna guani within the 5 years was 69.68 %. The parasitization increased with the population density of the wasp. The infested rate of Platycladus orientalis decreased from 22.78 % before the release to 0.49 % after the release. The population density of Semanotus bifasciatus in the infested trees decreased from 25.4 per tree to 3 per tree and that of Scleroderma guani increased from 0,2 per tree in 2000 to 2.5 per tree in 2005.

关 键 词：双条杉天牛 管氏肿腿蜂 防治 释放 

分 类 号：S763.38[农业科学—森林保护学]