The suffocating effects of 48% Chlorpyrifos to the two pest species are good, the death rates of R. dominica and C. minutus reached 100.0 percent at the density of 0.80ml/L.

• 48%25乐斯本乳油对两种储粮害虫的熏蒸效果较好；在0.；80ml/L浓度下；谷蠹、长角扁谷盗死亡率均达到100