1974年以来,我们采用棉田间种向日葵诱杀棉花上的斜纹夜蛾,效果非常好,受到群众欢迎。1974年,我们先在一亩丰产试验田里,试种了80株,按口字形排列种下。到7、8月份,向日葵比棉苗高出1—2倍,那时正是斜纹夜蛾危害比较严重的时刻,其他棉田都有斜纹夜蛾危害的现象,而丰产试验田,斜纹夜蛾却不危害棉花,而危害葵叶。根据斜纹夜蛾1—3龄幼虫有集中取食的习性,我们采取摘 Since 1974, we have used cotton seedling sunflower to trap cotton bollworm, the effect is very good, which is welcomed by the masses. In 1974, we first planted 80 plants in an acre of high-yielding experimental fields and planted them in a glyph. In July and August, sunflower was 1-2 times higher than the cotton seedlings, when it was the time when the damage caused by Spodoptera litura was more serious. Other cotton fields had the harm of Spodoptera litura, but the high-yield test field and Spodoptera litura Hazard of cotton, and endanger the sunflower leaves. According to the first instar larvae of Spodoptera litura have a habit of concentrated feeding, we pick