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本文阐述的气环负压熏蒸防治贮粮害虫新技术，它是一种采用仓外投药；利用磷化铝（片）和水或磷化锌加酸快速反应，产生磷化氢；使用通风机气流把其稀释并输送到负压粮堆；再应用负压导流的作用，进行气环负压熏蒸的新方法。该法反应迅速，扩散快而均匀，毒气浓度高，致死浓度时间长，且保持无虫期久，是一种安全、有效、经济、卫生、优于传统杀虫方法和国内外应用的环流熏蒸的较理想的杀虫方法。
This article describes the gas ring negative pressure fumigation prevention and control of storage pests new technology, which is a use outside the warehouse; use of aluminum phosphide (tablets) and water or zinc phosphide plus acid rapid reaction to produce phosphine; the use of ventilators The air stream is diluted and delivered to the negative pressure grain piles. A new method of negative pressure fumigation of the air ring is then applied to the effect of negative pressure diversion. The method is rapid, rapid and uniform diffusion, high concentration of poison gas, lethal concentration for a long time, and remain insects for a long time, is a safe, effective, economical, sanitary, superior to traditional insecticidal methods and circulation fumigation at home and abroad The more ideal way to kill insects.