In this paper, the toxicities of four new pesti-cides on Rana limnocharis tadpole were tested, and their safety pre-evaluations were made.the results show that these pesti-cides are low-toxic to frog.

• 测定了甲基异柳磷等四种新农药对泽蛙蝌蚪的毒性，作出了安全性预评价。结果表明：四种农药对蛙类均为无实际危害的低毒农药。