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苦參堿 以觸殺(sha)和胃毒(du)方式作用(yong)于(yu)害(hai)蟲(chong)(chong)(chong)(chong)，復雜成分作用(yong)蟲(chong)(chong)(chong)(chong)體的多個靶標，，破壞(huai)害(hai)蟲(chong)(chong)(chong)(chong)的多個抗藥性系(xi)統(tong)(tong)，使蟲(chong)(chong)(chong)(chong)體蛋白質(zhi)凝固(gu)致死；藥后迅速興奮，呼吸(xi)加(jia)速，并由植物源(yuan)特殊成分堵塞蟲(chong)(chong)(chong)(chong)體氣孔、破壞(huai)呼吸(xi)系(xi)統(tong)(tong)，使害(hai)蟲(chong)(chong)(chong)(chong)快速窒息而死。