11种稻田常用杀虫剂对拟环纹豹蛛的室内安全性评价

摘要

An in-lab test was conducted on 1 1 insecticides to determine their toxicities on the spider,Pardosa pseudoannulata ,using a dipping method.According to the quotients (RQ=LC50/low concentration of insecticide) of the insecticides, imidaclprid, nitenpyram, dinotefuran, sulfoxaflor, pymetrozine, buprofezin and chlorantraniliprole had RQs greater than 5.00 and were considered of low risks to P .pseudoannulata;abamectin had a RQ = 1.55,of moderate risk;isoprocarb had a RQ = 0.25 and fenobucarb 0.1 7,of high risks;and, chlopyrifos had a RQ=0.001,of extreme risk.%为明确当前稻田常用杀虫剂对稻田天敌蜘蛛的安全性,采用浸渍法测定了异丙威等11种化学药剂对稻田蜘蛛优势种拟环纹豹蛛的毒性,并通过安全系数(RQ)评估供试药剂的安全性。结果表明：吡虫啉、烯啶虫胺、呋虫胺、氟啶虫胺腈、吡蚜酮、噻嗪酮和氯虫苯甲酰胺对拟环纹豹蛛的 RQ 大于5.00均为低风险性农药；阿维菌素的 RQ=1.55,为中等风险农药；异丙威和仲丁威的 RQ 分别为0.25和0.17,为高风险农药；毒死蜱的 RQ=0.001,为极高风险农药。在水稻害虫防治中可选用这些低风险性农药,同时科学合理用药,有效保护和利用稻田蜘蛛资源,达到持续有效控制水稻害虫的目的。