大草蛉Chrysopa Septempunctata Wesm-aei成虫和幼虫都能捕食粮食、棉花、林木、果树和蔬菜作物上的多种害虫,它分布广、种群数量较大,在森林生态系中也占有一定的位置,是一种有利用前途的天敌昆虫。为了加以保护利用,近几年来我们对它进行了观察研究,现将其生物学和松林间发生消长的情况报导于下。 Larvae Chrysopa Septempunctata Wesm-aei Both adults and larvae can prey on a wide range of pests on crops such as grain, cotton, tree, fruit and vegetable crops. They are widely distributed and have a large population and occupy a certain place in forest ecosystems. A natural enemy insects that have a promising future. In order to protect and utilize it, we have observed and studied it in recent years and we now report its biology and the growth and decline of pine forests.