【摘要】 本文是1985年4月—11月杭州市郊区主要蔬菜害虫种类和群落结构调查和研究的结果。在调查期间发现了四十多种主要蔬菜害虫,其中γ-对策的害虫在数量上一直处于优势地位。蔬菜害虫主要发生在春、秋两季,夏季数量有所下降,但种类增加,8月份的群落多样性指数达3.269。不同的蔬菜种类相比,四季豆上发生的害虫种类最多,多样性指数为2.411。对不同蔬菜的害虫群落间进行树状图和排序聚类分析,结果表明蔬菜害虫的群落根据其寄主,大体上形成一个以十字花科作物为主、包括瓜豆类作物的害虫大群落。更多还原

【Abstract】 From April to November in 1985 , main species of vegetable pests and their community structures in the suburban district of Hangzhou were investigated . Over forty species of main vegetable pests were found and r-tactical pests of them are still dominant in population. Vegetable pests occur mainly in Spring and Autumn. In Summer, their populations are decreased but the numbers of species are increased. The diversity index of the community in August is 3.269 . The pest species of the kidney bean is more than that of other vegetables and the diversity index of its community is 2.411. Communities of pests on different vegetables can be classified as a total pest community including that of the mustard cucurbit and pulse plants by the dendrogram and the ordinal cluster analyse更多还原