七星瓢虫、叶色草蛉、小花蝽等是麦蚜的优势种天敌,同时又是棉虫(棉蚜、棉铃虫)的优势种天敌,所以了解麦田天敌向棉田的迁移,对于棉田壮大天敌群落,用以控制棉虫有重要意义。为此,我们于1987、1988年对麦田天敌向棉田的转移做了调查。 Coccinella septempunctata, Scirpus mariqueter and Tricholoma gigantica are the natural enemies of dominant species of wheat aphids, and are also the dominant species of natural enemies of cotton aphids (cotton aphid and cotton bollworm). Therefore, understanding the migration of natural enemies of wheat fields to cotton fields and the growth of natural enemies Community, to control cotton insects is of great significance. To this end, we conducted a survey on the transfer of natural enemies of wheat fields to cotton fields in 1987 and 1988.