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为解决大型包围散装粮垛的熏蒸杀虫问题,利用五面密封对包围散装玉米仓房进行了环流熏蒸和粮面常规投药熏蒸的对比试验研究。结果表明,采用环流熏蒸可使磷化氢气体快速在粮堆内达到均匀分布,磷化氢有效杀虫浓度维持的时间更长,杀虫效果更好。同时,从长期熏蒸杀虫来看,环流熏蒸也更为经济。
In order to solve the fumigation and insecticide problem of large-scale enlarging bulk grain stacks, a comparative experiment research on circulating fumigation and conventional nosocomial fumigation by using five-face seal was carried out. The results showed that the use of circulating fumigation can make phosphine gas quickly reach uniform distribution in the grain heap, phosphine effective insecticidal concentration to maintain longer, insecticidal effect is better. At the same time, from the long-term fumigation insecticide point of view, circulation fumigation is more economical.