六种杀虫剂对小地老虎的毒力及对土壤生物安全性评价  

Toxicity of six insecticides to black cutworm Agrotis ypsilon(Rottemberg) and safety evaluation to oil organisms

作　　者：于伟丽[1] 杜军辉[1] 胡延萍 申瑞平[1] 慕卫[1] 

机构地区：[1]山东农业大学,农药毒理与应用技术省级重点实验室,泰安271018 [2]山东章丘植保站,章丘250200

出　　处：《植物保护学报》2012年第3期277-282,共6页Journal of Plant Protection

基　　金：国家"十二五"科技支撑计划(2012BAD19B05)

摘　　要：为筛选出高效安全的土壤处理杀虫剂,室内采用浸叶法比较了3种新杀虫剂与3种已登记的杀虫剂对小地老虎的毒力,同时用人工土壤法和密闭法分别测定了6种药剂对蚯蚓的急性毒性和对土壤呼吸强度的影响。结果显示,溴虫腈、茚虫威和甲维盐对小地老虎3龄幼虫的毒力明显高于3种已登记药剂毒死蜱、辛硫磷和高效氯氟氰菊酯;溴虫腈、茚虫威和甲维盐对蚯蚓的LC50分别为1320.80、1153.42和167.91 mg/kg,均低于其它3种药剂,属于低毒级;供试杀虫剂中以溴虫腈对小地老虎和蚯蚓的毒力选择性最高,其毒力选择性比值(蚯蚓LC50/小地老虎LC50)为7115.23;6种药剂对土壤微生物均无危害性。Leaf-dip, artificial soil and direct absorption methods were used conducted to determine the laboratory toxicity of six insecticides to the black cutworm, Agrotis ypsilon （ Rottemberg）, the acute re- sponse to the earthworm, Eisenia foelida and the effects on respiration of soil microorganism, respective- ly. Results showed that the toxicity of chlorfenapyr, indoxacarb and emamectin benzoate was significantly higher than that of chlorpyrifos, phoxim and lambadacyhalothrin. The acute response to the earthworm re- suits showed that the LCs0 of chlorfenapyr, indoxacarb and emamectin benzoate was 1 320.80, 1 153.42 and 167.91 mg/kg, which belonged to the inferior toxic category. The selective toxicity of chlorfenapyr was the highest among 6 insecticides tested, and its selective toxicity ratio reached 7115.23. These pesti- cides all belong to the lower poisonous pesticide category on soil microbe.

关 键 词：小地老虎 毒力 蚯蚓 土壤微生物 安全性 

分 类 号：S482.3[农业科学—农药学]