两种防治措施下转Bt基因棉田绿盲蝽的发生与为害  

Population dynamics and damage of Lygus lucorum in Bt cotton fields under two control measures

作　　者：郭建英 周洪旭 万方浩[3] 刘小京[5] 韩召军[1] 

机构地区：[1]南京农业大学植物保护学院 [2]中国农业科学院农业环境与可持续发展研究所农业部生物防治重点开放实验室北京100081 [3]中国农业科学院农业环境与可持续发展研究所农业部生物防治重点开放实验室 [4]莱阳农学院植保系莱阳265200 [5]中国科学院石家庄农业现代化研究所

出　　处：《昆虫知识》2005年第4期424-428,共5页Entomological Knowledge

基　　金：国家重点基础研究(973)发展规划(G2000016209);"十五"国家科技攻关重大项目(2002BA516A01);欧盟项目(ICA4CT200110069)共同资助。

摘　　要：2002年在河北省南皮县对2种防治措施下转Bt基因田绿盲蝽LyguslucorumMayre的发生与为害进行的系统调查表明,采用生物农药和低毒化学农药防治4次,Bt棉田绿盲蝽的发生为害较为严重,9月上旬发生高峰期种群密度为7.2头10株,显著高于防治指标,第2代绿盲蝽为害高峰期,叶片被害率为19.4%;采用当地棉农化学防治方法施用农药7次,Bt棉田绿盲蝽发生为害较轻,发生高峰期(8月中旬)种群密度为2.0头10株,第2代绿盲蝽为害高峰期,叶片被害率为4.8%。讨论指出绿盲蝽已成为转Bt基因棉生产中的重要问题,应加快绿盲蝽在转Bt基因棉田的生态调控研究。Population dynamics and damage of Lygus lucorum Mayr in Bt cotton fields under two control measures were investigated in Nanpi County, Hebei Province, 2002. In the Bt cotton field sprayed with mainly biopesticides, the number of green leaf bugs was more than that in the chemical control field. In the mainly biopesticide controlled field the population peak happened in early September, which was 7.2 bugs per 10 plants, higher than the control threshold, the damage rate of total leaves was 19.4% during the peak of the second generation. In the chemical control field, the bug number at the population peak was 2.0 per 10 plants, and the damage rate of total leaves was 4.8% , which were less than those in the mainly biopestcide controlled field. It suggested that green leaf bug became an important pest in Bt cotton production and its ecological control in Bt cotton field should be studied.

关 键 词：转BT基因棉 绿盲蝽 发生动态 化学防治 综合防治 转BT基因 发生为害 BT棉田 防治措施 发生高峰期 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]