摘要
通过食下毒叶法和接触法测定了毒死蜱和甲氰菊酯对家蚕的毒性。结果表明:食下毒叶法对2龄起蚕的LC50(48h)分别为:毒死蜱2.3322mg/kg桑叶和甲氰菊酯0.1522mg/kg桑叶,其浸渍桑叶的药液浓度分别为4.6622mg/L和0.3044mg/L。接触法中毒死蜱和甲氰菊酯对2龄起蚕的LC50值(24h)分别为:6.32μg/cm2和0.92μg/cm2。毒死蜱和甲氰菊酯的毒性比都<1,对家蚕的毒性为高毒。
Toxicity of chlorpyrifos and fenpropath r in to silkworm ( Bombyx mori L.) were tested by food intake method and contact method.Safety evaluation has also been conducted.The results showed:LC 50 ( 48h ) by food intake method were chlorpyrifos4.6622mg/L,fenpropath r in0.3044mg/L;LC 50 ( 24h ) by contact method were chlorpyrifos6.32μg/cm 2 ,fenpropathin0.92μg/cm 2 .The toxicity of chlorpyrifos and fenpropath r in to silkworm ( Bombyx mori L.) is high.
出处
《农药科学与管理》
CAS
2003年第9期11-14,共4页
Pesticide Science and Administration
