近年来,蚕豆象和豌豆象(群众称葫豆虫和豌豆虫)为害甚为猖獗。据资阳、眉山、广汉、万县等地的调查,葫豆和豌豆籽粒的被害率一般都在65％左右,最高的达90％以上。每当蚕豆和豌豆开花结荚时,越冬成虫便从隐蔽场所飞至田间交尾产卵。其孵化幼虫钻入豆粒危害,到豆粒成熟时,幼虫羽化为成虫,豆粒也被蛀食一空。蚕虫象和豌豆象虽是仓库害虫,但由于为害发生在豆粒收获入仓之前,因而田间防治也势在必行。我从1984年起连续两年对用溴氰菊脂防治这 In recent years, Vicia faba and pea like (people say gourd insects and pea insects) damage is rampant. According to the investigation of Ziyang, Meishan, Guanghan, Wanxian and other places, the damage rates of gourd and pea seeds are generally around 65% and the highest is over 90%. Whenever faba beans and peas flowering pod, the overwintering adults fly from the shelter to the field to lay eggs. The hatching larvae into the bean damage, to the bean maturity, the larvae emerge as adults, beans are also eaten. Silkworm and peas, although the warehouse pests, but because the damage occurred before the harvest of beans into the warehouse, so field control is imperative. I have been using it for two consecutive years since 1984 to control this with deltamethrin