摘要
山东宁阳国家粮食储备库进行了平房仓散装小麦的磷化氢环流熏蒸试验 ,结果表明 ,粮堆内磷化氢浓度在投药开机 1 8小时后趋于均匀。最低浓度与最高浓度比为 0 .75;2 5小时后 ,比值为 0 .57,均高于国外资料推荐的浓度均匀性标准 ,即大于 0 .2 5。43小时以后的浓度测定结果也高于该值。可见磷化氢环流熏蒸系统对促进磷化氢气体在粮堆内的分布效果良好。熏蒸 1 4天后取得良好的杀虫效果。
In order to control stored grain insect pests in wheat which was stored in horizontal warehouse,the trial of re circulation fumigation with phosphine was carried out in Ningyang Depot of State Grain Reserve,Shandong Province.The result indicated that distribution of phosphine become near equalizaton in grain stack after 18 hours of starting fumigation with re circulation machine.The rate of the minimum concentration compared with the maximum concentration was 0.75. After 25 hours the rate was 0.57.After 43 hours the rates were more than 0.57. The system of phosphine re circualtion was effect to make the gas distribute very well in grain stack.After 14 days of expose the effect to kill insect pests was excellent.
出处
《粮食储藏》
2000年第4期24-27,共4页
Grain Storage
