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草蜂是我省柞蚕年放一次和二化秋蚕稚蚕期的主要虫害,严重影响柞蚕稳产高产。全省普遍发生,一般年份有15%的柞蚕被害,干旱年份更为猖獗。为了防治草蜂对柞蚕的危害,我们通过所内实验和农村大面积生产鉴定、示范,肯定了水坑药杀草蜂的防治效果。一、形态及主要习性草蜂(Polistes gallicus)属膜翅目细腰亚目胡蜂科。成虫:体黑褐色,体长13—18毫米,展翅26—28毫米;头黑,复眼大,大颚发达;前、中、后胸均黄色有斑纹,腹部节间有黄色环斑,第三腹节背
Grass bees are tussah in our province once and two autumn silkworm juvenile silkworm main pests, seriously affecting the tussah stable and high yield. The province is widespread, 15% of the general year of tussah were killed, the year of drought is more rampant. In order to prevent the harm of the bee on the tussah, we identified and demonstrated the experimental and large-scale production in rural areas and confirmed the prevention and control effect of the puddles. First, the shape and main habits Grass bee (Polistes gallicus) is a genus Hymenoptera Sipecuvaceae. Adult: body dark brown, body length 13-18 mm, wings 26-28 mm; head black, complex eyes large, developed jaw; before and after the chest are yellow markings, belly internodes yellow ring spot, the third Abdominal back