system of common duct installed inside of a middle size silo making circumfluent fumigation and ventilation to kill pest inset and to cool grain as well as to make using of remainder fumigant.

• 立筒仓粮堆在储藏期间感染害虫和不正常升温,是安全储粮的难题,本试验在立筒仓内安装了一套共用管道系统,兼有熏蒸杀虫,通风降温和熏蒸残余气体利用的功能。