我国烟田昆虫群落的划分及其特征分析

根据纬度、海拔、温度、降雨、日照等地理、气象因子指标,对我国71个植烟市和(或)县及生态条件独特的市和(或)县进行了聚类分析,聚类结果与我国烟草的7个一级种植区基本吻合,我国烟田烟草昆虫群落可依此划分为东北、黄淮、长江中上游、长江中下游、西南、南部和北部西部等7个。各群落的重要烟草昆虫种类有所不同,烟草昆虫天敌的种类差别更大。其中西南群落食物网最复杂。

Assortment and characteristics of tobacco insect communities in China

Seventy_one tobacco-growth regions in China were clustered statistically based upon the data of latitude,altitude,air temperature,rainfall,daylength etc.The results were consistent with the 7 zones of primary tobacco-growth regions in China,and tobacco insects were also assorted into 7 communities accordingly,including Northeast,Huanghuai,Mid-upriver of Yangtse River,Mid-downriver of Yangtse River,Southwest,South,North and West communities.The species of key insects feeding on tobacco plants change with communities and there is more distinct difference among natural enemy species.Foodwebs of five insect communities were described detailedly in this paper,amoung which Southwest community is the most complicated.