在室内恒温条件下,采用浸渍法测定了氟虫腈、毒死蜱及其混配对二化螟的毒力效应,并评价了这2种药剂的联合作用。结果表明,氟虫腈、毒死蜱混配剂D的共毒系数最大,为233.42。 Under the indoor constant temperature conditions, the toxic effects of fipronil, chlorpyrifos and their mixtures on the stem borer, Chilo suppressalis (Walker) were determined by impregnation method and the combined effects of these two agents were evaluated. The results showed that the co-toxicity coefficient of fipronil and chlorpyrifos mixture D was the highest, which was 233.42.