用磷化铝熏蒸杀虫有很多种投药方法,如粮面投药、探管投药、包裹埋藏投药、磷化铝仓外发生器投药以及钢瓶装磷化氢——二氧化碳混合气体投药等。以上方法均存不足,如有的方法工作量大,易污染粮食;有的方法投药时间长,且费用高;有的方法用药剂量大,效果又不佳。磷化铝风道口集中投药 Fumigation with aluminum phosphide fumigation insecticide There are many kinds of dosing methods, such as food dosing, probe dosing, parcel burial dosing, phosphine outside the warehouse generator dosing and cylinder phosphine - carbon dioxide mixed gas dosing. The above methods are inadequate, if some methods work heavy, easy to contaminate food; some methods of dosing for a long time, and the high cost; some methods of medication dosage, the effect is not good. Aluminum phosphide air duct mouth dosing