11种稻田常用杀虫剂对拟环纹豹蛛的室内安全性评价

In-lab Evaluation on Toxicity of Eleven Insecticides on Pardosa pseudoannulata

摘要: 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。

Abstract: An in-lab test was conducted on 11 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 0.17, of high risks; and, chlopyrifos had a RQ=0.001, of extreme risk.