熏蒸剂溴甲烷和磷化氢当混合使用时,能增加对贮粮害虫,如米象、拟谷盗等试验害虫的毒性。事实上,将这两种熏蒸剂混合时能发挥增效作用。在一些地方,需要这两种化合物有利的性质,以便发挥他们的特长,扩大使用范围。溴甲烷是一种作用迅速的熏蒸剂,防治时贮粮害虫与溴甲烷接触几小时即可,而对PH_3,则要求几天的时间才能充分发 Fumigant Methyl bromide and phosphine, when used in combination, increase toxicity to pests of stored grain such as rice and ponzu. In fact, the two fumigants can play a synergistic effect when mixed. In some places, the desirable properties of both compounds are needed in order to leverage their strengths and expand their use. Methyl bromide is a fast-acting fumigant, when stored grain pests and methyl bromide exposure to a few hours, but for PH_3, it takes a few days to full hair