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豌豆象(Brtichus Pisorum L.)在湖北罗田每年发生一代,以成虫在豆粒内或在仓房隐蔽处越冬。卵期平均为8.8日,幼虫期平均为38.6日,蛹期平均为9.3日,合计为56.7日。越冬后的成虫于次春豌豆开花时即飞往豌豆地取食豆花、交配和产卵。幼虫孵出后即蛀入豆粒内部食害,老熟时约已吃去每粒新鲜豌豆重量的43.9％。一般距村庄愈近的豌豆受害也愈重,愈远愈轻。地势高的豌豆地一般受害都比地势低的豌豆地为轻。据初步观察表明:麻豌豆品种受害最重,红豌豆次之,白豌豆较轻。又豌豆适当迟播,则结荚期迟于豌豆象的产卵盛期,可以减轻豌豆象的为害。在罗田广泛用氯化苦熏蒸防治豌豆象,在各人民公社生产队都使用缸坛用纸封口熏蒸的方法,每100斤豌豆约用氯化苦3—5毫升,不但方法简便易行,而且经济有效,极受群众欢迎。此外也采用过开水烫种的防治方法。
Petiole (Brtichus Pisorum L.) occurs annually in Luotian, Hubei Province, where adults overwinter in legumes or in hidden shelters. The average egg period is 8.8 days, the average larval period is 38.6 days, pupal period averaged 9.3 days, a total of 56.7 days. The overwintering adult fly in the second spring pea flowering to the pea to eat beans, mating and spawning. After larvae hatch into the inside of the bean sprouts, eaten about 43.9% of the weight of each fresh pea. The closer to the village, the peas suffer the heavier and farther the more. Peas with high topography are generally harder than peas with low topography. According to preliminary observations show that: Ma pea varieties suffer the most, followed by red peas, white peas lighter. Appropriate late sowing peas, pod later than pea-like spawning peak, you can reduce the pea-like damage. Luotian chloropicrin widely fumigation peas control, production teams in the people’s communes are used cylinder altar paper fumigation method, about 100 pounds of peas chloropicrin about 3-5 ml, not only the method is simple and easy, And economical and effective, very popular with the masses. In addition, also used hot water prevention and control methods.