为探索砖圆仓硫酰氟熏蒸杀虫和防护效果，分别在3个不同气密性仓房，分别采用整仓不环流熏蒸和环流熏蒸，以及采用不同的熏蒸药剂浓度，通过分析比较气体均匀性，浓度保持时间和杀虫防护效果进行评价。试验结果表明，硫酰氟气体可在4 h内自然扩散穿透10 m粮堆，并在24 h内达到整仓气体均匀。环流熏蒸由于环流管道老化造成药剂损失，气体浓度保持时间短。5 g/m3的药剂浓度即可实现较好的快速杀灭4种主要储粮害虫的效果。
To investigate the insecticidal and protective effectiveness of sulfuryl fluoride fumigation in brick silos, three warehouses with different air-tightness were used for evaluation by analyzing gas uniformity, concentration retention time and insecticidal effects. Whole warehouse non-circulation fumigation and circulation fumigation were adopted with different fumigation concentrations applied. The experiment results show that sulfuryl fluoride gas can naturally diffuse thoroughly through a 10 m grain pile within 4 hours, and achieve uniform gas in the entire warehouse within 24 hours. However, circulation fumigation caused a large amount of chemical loss and the concentration retention time was comparatively short. Results also prove the concentration of 5 g/m3 can achieve a desired and rapid killing effect of 4 main types of pests in stored grains.