Abstract: In this paper, the basic demands of recirculation fumigation of phosphine in Chin ese national grain storage depots are discussed, which include safety, phosphine c oncentration, disribution, gas tightness, running state and corrosion.

• 文摘:本文讨论了中央直属储备粮食仓库采用有中国特色的环流熏蒸中应达到的基本要求，从熏蒸过程的安全性、度分布要求、密性要求、及设备工况、腐蚀等方面进行了阐述。