摘要
随着棉虫综合防治的不断发展,棉虫天敌的保护和利用越来越重要.本文将棉田内捕食性天敌视为一个整体,根据群落内物种的组成和数量,采用群落的几个参数和聚类分析等方法,了解棉田捕食性天敌群落分类和群落内物种的联系及其功能,以期为棉虫综合治理提供依据.
Main species of the predators in cotton fields and their community structure were investigated from May to September of 1981 to 1990 and Over eighteen species of main predators were found, and among them spiders. are still dominant. Predators occur mainly in June to August. In May their population were lawer, but the numbers of species were increased.The diversity index of the community were obviously different from year to year. The Communities of predators could be classified by the dendrogram and the ordinal cluster analysis.
出处
《昆虫天敌》
CSCD
1994年第1期28-35,27,共9页
Natural Enemies of Insects
