1前言由于长期不科学使用磷化氢,如盲目提高磷化铝的剂量,不合理地增加磷化氢浓度,密封条件差或杀虫气体分布不均匀等,使很多主要储粮害虫对磷化氢产生了较为严重的抗药性,导致磷化氢熏蒸杀虫不彻底,防治效果不好甚至无效,50%左右的储粮每年至少要熏蒸1～2次。高大平房仓仓体空 1 Introduction As a result of long-term unscientific use of phosphine, such as the blind to increase the dose of aluminum phosphide, unreasonable increase in phosphine concentration, poor sealing conditions or insecticidal gas distribution is uneven, so that many of the main stored grain pests on the phosphating Hydrogen has a more serious resistance, resulting in phosphine fumigation insecticide is not complete, the control effect is not good or even invalid, about 50% of stored grain fumigation at least 1 or 2 times a year. Large warehouse warehouse empty