棉田插种一定油菜,利用油菜上发生的蚜虫招引或繁殖以七星瓢虫为主的天敌,控制蚜害,同时,油菜又诱集地老虎类害虫取食,使棉苗避害,构成了棉田生态工程措施。是生态系食物链的重新组合。1981—85年田间试验表明,其生产效益显著,目前在我省已累计示范推广24万余亩。 Some rapeseeds were planted in the cotton fields. Aphids in the rape were used to attract or breed natural enemies that dominated the ladybug, controlling the aphid. At the same time, the rapeseed was also fed to the tiger pests to avoid the cotton seedlings. Ecological engineering measures. Is a reorganization of the ecosystem food chain. Field experiments in 1981-85 showed that their production efficiency was significant. At present, a total of more than 240,000 mu have been demonstrated and popularized in our province.