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一、试验目的通过试验,了解几种仓虫在相同条件下,用溴甲烷(CH_3B_r)熏蒸,死亡率随密闭时间延长而增加的情况及达到100%死亡率的时间先后。
First, the purpose of the experiment Through the test to understand the number of species of Cercospora in the same conditions, with methyl bromide (CH_3B_r) fumigation, the mortality rate increased with the closure time and the situation reached 100% mortality successively.