作　　者： ; ; ; ; ; ;

机构地区： 安徽农业大学植物保护学院

出　　处： 《中国农学通报》 2007年第11期309-312,共4页

摘　　要： 用3种低毒农药对生活在稻谷中的玉米象和赤拟谷盗2种储粮害虫用喷雾法进行室内毒力测定。结果表明:(1)1.8%阿维菌素乳油(EC)、2%阿维菌素微囊悬浮剂、48%毒死蜱乳油(EC)对玉米象的致死中剂量(LD50)分别为0.01mg/kg、0.07mg/kg、4.65mg/kg,而对赤拟谷盗的LD50分别为0.08mg/kg、0.50mg/kg、5.89mg/kg;(2)在相同剂量下,3种药剂中以1.8%阿维菌素EC对2种害虫的毒杀速度最快;(3)玉米象比赤拟谷盗对这3种药剂更敏感。建议采用1.8%阿维菌素EC、2%阿维菌素微囊悬浮剂、48%毒死蜱EC防治玉米象的使用剂量分别为0.05mg/kg、0.80mg/kg和2.0mg/kg,而防治赤拟谷盗则分别为0.05mg/kg、0.80mg/kg和8.0mg/kg。 Virulence of avermectins 1.8% EC, 2% microcapsule suspension and chlorpyrifos 48% EC to S. zeamais and T. castaneum that lived in paddy ware tested by means of spraying in the laboratory. The results showed as follows： （1） The LD50s of avermectin 1.8% EC, 2% microcapsule suspension and chlorpyrifos 48% EC to S. zeamais were respectively 0.01mg/kg, 0.07mg4kg and 4.65mg/kg, and those of them to T. castaneum were respectively 0.08mg/kg, 0.50mg/kg and 5.89mg/kg. （2） The death rate of avermectin 1.8% EC to the two stored-grain insect pests was the highest among three kinds of insecticides in the same conditions. （3） S. zeamais was more sensitive to the three kinds of insecticides than T. castaneum. The recommended dosages of Avermectin 1.8% EC, 2% microcapsule suspension and Chlorprifos 48% EC are respectively 0.05mg/kg, 0.80mg/kg and 2.0mg/kg in order to control S. zeamais, and those of the three insecticides are respectively 0.05mg/kg, 0.80mg/kg and 8.0mg/kg in order to control T. castaneum.

关 键 词： 阿维菌素 毒死蜱 玉米象 赤拟谷盗 毒力

领　　域： [农业科学] [农业科学]