棉区豆田主要害虫及其捕食性天敌生态位的研究  

Studies on the niche of major insect pests and their predators in soybean fields of cotton areas

作　　者：杨勤民[1] 牟吉元[1] 徐洪富[1] 

机构地区：[1]山东农业大学植物保护系

出　　处：《华东昆虫学报》1998年第2期107-113,共7页Entomological Journal of East China

摘　　要：１９９７年调查了鲁西南棉区豆田不同时期内，大豆植株上、中、下３部位上主要害虫及其捕食性天敌的数量。文中分析了物种生态位宽度和各物种间的重叠度指数，探讨了主要害虫间的竞争关系以及棉铃虫与捕食性天敌间的关系。The number of the major nisect pests and their predators in soybean fields were investigated in southwest cotton areas of Shandong Province, China in 1997.Based on the investigated results, the niche breadth of species and the niche overlap indices among the species were studied. The competitive relationship among the major insect pests and the relationship between Helicoverpa armigera (Hubner) and their predators were analyzed.

关 键 词：捕食性天敌 主要害虫 棉区 植株 棉铃虫 大豆 生态位宽度 物种 数量 指数 

分 类 号：Q948[生物学—植物学] S435[农业科学—农业昆虫与害虫防治]