环流熏蒸在横向通风系统中的应用研究

摘要

Horizontal recirculation fumigation was adopt to early indica rice under film by using mobile recircula‐tion device combined with horizontal ventilation system in warehouse ,to explore the technical features ,op‐eration technology and application effect of the recirculation fumigation in warehouse within the horizontal ventilation system . Experiments show s that using horizontal velitation system can make phosphine gases a‐chieve the minimum and maximum concentration ratio of 0 .6 within 3 hours after the end of recirculation fumigation application , it also can quickly and evenly make an effective concentration of phosphine gases in grain bulk , grately alleviate working intensity , enhance the effect of fumigation and emergency manage‐ment ability .%对平房仓储藏的早籼稻谷采用移动式环流装置结合横向通风系统进行膜下横向环流熏蒸，探究平房仓环流熏蒸在横向通风系统中的技术特点、操作工艺和应用效果。试验表明，利用横向通风系统可使P H3气体在结束环流施药后3 h内，达到最低与最高浓度比0.6的要求，可以在粮堆内快速而均匀地形成有效浓度，大幅减轻劳动强度，增强熏蒸效果和应急情况的处理。