DIVERSITY ANALYSIS OF ARTHROPODA COMMUNITYIN COTTON FIELDS OF SHESHAN DISTRICTED AND DIVERSITY EFFECT MADE BY INSETICIDES
上海佘山地区棉田节肢动物群落多样性分析及杀虫剂对多样性的影响

An invetigation into arthropoda community over She-Shan cotton production (Sungjian county close by Shanghai Suburbs) was made in 1976-1980. There appeared 28 kinds of pest, 52 kinds of natural enemies and some other about 10 kinds of saprophagous and pollon feeders. Based on above, an name list of items is drawn up to show the times of their appearance and the quantity by percen-tage(%) illustrating that cotton aphids, the amount of which occupies above 70% of local cotton fields in ecological system, is d...