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菜豆象Ａｃａｎｔｈｏｓｃｅｌｉｄｅｓｏｂｔｅｃｔｕｓ（Ｓａｙ）在碗町室内自然条件下每年发生７代，以老熟幼虫在豆粒内越冬。幼虫４龄，初孵幼虫的蛀入率与温、湿度有密切关系。成虫产卵对寄主豆粒有明显的选择性。寄主范围较广。室内危害深度可达１ｍ以上，为害造成的损失严重。经高温５５℃处理６０分钟、６０℃处理２０分钟、低温－１５Ｃ处理１８０分钟各虫态１００％死亡。于河沙和草木灰压盖能有效阻止成虫钻入产卵和幼虫钻入危害。草木灰拌种能有效杀死初孵幼虫。花生油、菜油和香茅油滴浸卵死亡率分别是５０．７％４４．７％和１００％；３种植物油拌种防虫的效果显著，其中以花生油的防效最佳，拌种５００天后再接虫幼虫，仍未能蛀入，且对豆类的发芽率无影响。磷化氢熏蒸，温度２６℃～２７℃、４８小时，卵、幼虫和蛹１００％死亡的浓度分别是０．７７２１ｍｇ／Ｌ、０．７６１５ｍｇ／Ｌ和１．３３４０ｍｇ／Ｌ；温度１５℃～２０℃、７２小时，卵、幼虫和蛹１００％死亡的浓度分别是０．４９８４ｍｇ／Ｌ、０．３８６０ｍｇ／Ｌ和０．７６８０ｍｇ／Ｌ。
Acanthoscelidesobtectus (Say) occurs seven times a year under the natural conditions of bowl-cho indoor, with mature larvae overwintering in legumes. 4th instar larvae, larvae newly hatched rate and temperature, humidity are closely related. Adult eggs have obvious selectivity to host bean. Host a wider range. Indoor hazards depth up to 1m above the damage caused by the damage. 60 ℃ for 60 minutes, 60 ℃ for 20 minutes and 100 ℃ for 180 minutes. In the river sand and grass ash gland can effectively prevent adults from penetrating eggs and larvae into harm. Straw ash seed dressing can effectively kill newly hatched larvae. The mortality of peanut oil, vegetable oil and citronella oil was 50.7%, 44.7% and 100%, respectively. The three kinds of vegetable oil had the best pest control effect, peanut oil had the best control effect, Insect larvae, still not eroded, and the germination rate of beans had no effect. Phosphine was fumigated and the concentrations of eggs, larvae and pupae were 0.7721 mg / L, 0.7615 mg / L and 1.3340 mg / L, respectively. The temperature was between 26 ℃ and 27 ℃ and 48 h, The concentrations of eggs, larvae and pupae in 100% of deaths were 0.4984mg / L, 0.3860mg / L and 0.7680mg / L respectively at 72 ℃ and 72 ℃.