为了寻求防治抗性棉蚜的新措施.我县开展了瓢虫的捕捉收集及饲养试验工作。县示范农场去冬以来捕捉瓢虫约15,000头;前杨公社宋家屯大队科学实验小组捕捉瓢虫25,000头;七里河、大定堡等公社也发动中、小学学生及社员捕捉越冬瓢虫 In order to seek new measures to prevent and control cotton aphid, our county carried out the collection and breeding experiments of ladybugs. About 15,000 ladybugs have been captured by the demonstration farm in winter; 25,000 heads of ladybugs have been captured by the scientific experimental group of the Songjiatun brigade in the former Yanggong Commune; communes such as Qilihe and Dadingdingpo have also mobilized middle and primary school students and their members to catch overwintering ladybugs