瓢虫是蚜虫的重要天敌,它可以捕食菜蚜、麦蚜、高粱蚜等多种害虫。据近几年调查,我们朝阳地区瓢虫的越冬死亡率(异色瓢虫)为45～70％,这对我们利用天敌灭蚜是个很大损失。为了保护瓢虫安全过冬,增加天敌数量,朝阳县十二台公社、喀左县草场公社南沟门大队等社队采取人工收集瓢虫冬贮的措施,收到很好效果。 Ladybug is an important natural enemies of aphids, it can prey on aphids, wheat aphids, sorghum aphids and other pests. According to the investigation in recent years, the overwintering mortality of ladybugs (Chameleys Ladybugs) in our Chaoyang region is 45 ~ 70%, which is a great loss to us by using natural enemies to kill aphids. In order to protect the ladybugs from the winter and increase the number of natural enemies, the community units of Chaoyang County’s twelve communes and the Cazonzuo pasture commune Nan’nanmen Brigade took manual measures to collect the winter ladybugs and received very good results.