烟稻邻作对白背飞虱及天敌功能团的影响  

Effects of Rice-Tobacco Intercropping on WBPH and the Guild of Natural Enemies in Rice Fields

作　　者：吴琼梅[1,2] 林胜[1] 尤民生[1] 郑云开[1] 姚凤銮[1] 

机构地区：[1]福建农林大学应用生态研究所,福州350002 [2]邵武市农业局植保站,福建邵武354000

出　　处：《中国农学通报》2011年第5期362-366,共5页Chinese Agricultural Science Bulletin

基　　金：国家"973"计划课题四"农业生物多样性控制害虫的效应;原理和方法"(2006CB100204);"973"计划课题任务六"水稻-害虫-天敌食物网关系及害虫系统管理策略"(2006CB1020066)

摘　　要：研究结果表明,邻作烤烟对白背飞虱具有一定的调控作用,在水稻抽穗期和灌浆期可将白背飞虱虫口数量控制在防治指标以下。邻作稻田天敌功能团对白背飞虱数量调控起了重要的作用,特别是在水稻抽穗期和灌浆期。用Shannon-Wiener多样性指数(H')、Pielou均匀性指数(E)和Simpson优势集中性指数(λ)对单作稻田和邻作稻田的蜘蛛功能团结构特征进行比较,与单作田相比,邻作田蜘蛛功能团优势集中性低,结构的多样性较高,功能团中各物种相对多度分布更均匀;邻作烤烟对稻田寄生性天敌功能团的结构特征影响甚微。The results generally demonstrated the dynamic of WBPH population in rice-tobacco intercropping treatments were lower than in rice monoculture systems, and the WBPH population was lower than control action threshold during heading and grain filling in rice in rice-tobacco intercropping systems. During the whole growing period of rice, Simpson index of spider guild was lower in rice-tobacco intercropping systems than in rice monoculture systems, while Shannon-Wiener index and Pielou index were higher. There was almost the same Simpson index, Shannon-Wiener index and Pielou index of parasitoid guild between the two systems. These findings suggested that tobacco habitats could potentially increase the efficiency of natural enemy and controlled WBPH population during heading and grain filling in rice.

关 键 词：水稻 白背飞虱 蜘蛛功能团 寄生性天敌功能团 

分 类 号：Q968[生物学—昆虫学]