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Bell 在实验室中测定了5％的溴甲烷和三氯乙烷混合物对多种储藏物害虫的毒性。毒性受溴甲烷剂量的影响最大。害虫耐药性的顺序是谷斑皮蠹>杂拟谷盗>赤拟谷盗>烟草粉斑螟>锈赤扁谷盗>米象>谷蠹>谷象>锯谷盗。每种害虫最耐药的阶段都是滞育害虫、蛹或老龄幼虫。溴甲烷在三氯甲烷中占1～2％时,这两种化合物的联合作用最为明显。在25℃时,溴甲烷对谷斑皮蠹滞育幼虫的毒性在有三氯乙烷时增强。相反,有三氯乙烷时,米象老龄幼虫忍受的溴甲烷剂量提高,这说明在用于防治米象时,
Bell measured 5% toxicity of methyl bromide and trichloroethane mixtures to various stored pests in the laboratory. The toxicity is most affected by the dose of methyl bromide. The order of pest resistance was Gorgon pestis> Miscobotanotaxis> Mudancreas> Tritici perlocculantatum> Rough albuginea> Millet> Rhododendron moth> Celastrus> sawtooth. The most resistant phase of each pest is a diapause pest, pupa or aged larva. Methyl bromide in chloroform in 1 to 2%, the combined effect of these two compounds most obvious. The toxicity of methyl bromide to diapause larvae at 25 ° C increased with trichloroethane. On the contrary, in the presence of trichloroethane, the dose of methyl bromide tolerated by aging rice larvae increased, indicating that when used for the control of rice elephants,