草蛉是多种棉虫的重要天敌,在邯郸地区主要有中华草蛉、丽草蛉、叶色草蛉、大草蛉等4种。为保护和利用草蛉防治棉虫,近年来我们重点对中华草蛉的自然发生规律作了如下考查。一、越冬:中华草蛉多于10月下旬至11月上旬以成虫在有蚜虫或其它卵、虫多的植物上潜伏越冬,有的随白菜、萝卜带入贮存场所越冬。(一)越冬成虫的体色变化。在10月间随着气温的下降,中华草蛉成虫的体色从绿色变为黄褐色或于胸腹部出现紫红色斑纹进入越冬期。1975年11月底调查,田间 Grass mulberry is an important natural enemies of a variety of cotton insects, mainly in Handan, Chinese grass pomfret, grass pomfret, leaf color grass pomfret, large grass pomfret 4 species. In order to prevent and control cotton moth in order to protect and utilize it, in recent years we have made the following examination of the natural occurrence rules of the Chinese weed. First, the wintering: Chinese weeds more than late October to early November to adults with aphids or other eggs, insects and more plants lurking overwintering, and some with cabbage, radish into the storage place for winter. (A) overwintering adult body color changes. In October, as the temperature drops, the body color of the adult grass larvae changes from green to yellowish brown or purple markings on the chest and abdomen enter the wintering period. Survey by the end of November 1975, field