我们对国产新型农药双灭多威进行了毒性实验.结果急性毒性大鼠经口 LD_(50)为100mg/kg;经皮 LD_(50)为150mg/kg,属中等毒性级。其蓄积系数 K>5,未发现致突变、致畸作用。经亚慢性实验,求得车间空气中最高容许浓度(MAC)参考值为0.784mg/m~3。鉴于双灭多威对多种农业害虫有较高的杀灭作用,且低毒安全,它是一种很有前途的新型氨基甲酸酯类农药. We conducted a toxicity test on a new domestic pesticide dual methomyl.Results The acute toxicity rat oral LD ​​50 was 100 mg / kg, and the transdermal LD50 50 was 150 mg / kg, which was of intermediate toxic level. The accumulation coefficient K> 5, did not find mutagenic, teratogenic effects. The sub-chronic test, the highest allowable concentration of the workshop air (MAC) reference value of 0.784mg / m ~ 3. It is a promising new carbamate pesticide due to its high killing effect against many kinds of agricultural pests and its low toxicity and safety.