蔬菜田间常用杀虫(螨)剂对尼氏真绥螨成螨的室内毒力测定

Indoor Toxicity Bioassay of Common Pesticides(Acaricides) in Vegetable Field to Adult Euseius nicholsi

为了指导田间农药的使用,减少对尼氏真绥螨的杀伤,采用玻片浸渍法,室内测定了蔬菜田间10种常用杀虫(螨)剂对尼氏真绥螨成螨的毒力。结果表明:供试药剂中,印楝素对尼氏真绥螨成螨毒力最高,其LC50为12.722 5mg/L;螨危最低,其LC50为1 217.346 3mg/L;供试药剂对尼氏真绥螨成螨的毒力由低到高依次为螨危<高效氯氟氰菊酯<阿维菌素<吡虫啉<哒螨灵<甲氨基阿维菌素苯甲酸盐<克螨特<虫螨腈<氯氰.毒死蜱<印楝素。

In order to guide the using of pesticides and decrease the killing of E. nicholsi, toxicity of 10 pesticides to adult E. nicholsi was determined by using slide-dip method in the laboratory. The results showed that toxicity of Azadirachtin was the highest with LC50 of 12. 722 5 mg/L. Toxicity of Spirodiclofen was the lowest,LC50 was 1217. 3463 mg/L. Toxicity of these 10 pesticides from low to high to adult E. nicholsi was Spirodiclofen〈 Lambda-cyhalothrin 〈 Abamectin % Imidacloprid Pyridaben 〈 Emamectin benzoate 〈 Propargite 〈 Chlorfenapyr % Chloride cyanide chlorpyrifos Azadirachtin.