二氧化碳与磷化氢混合熏蒸防治储烟害虫试验

Experiments on Pest Control in Tobacco Storage by Fumigating Carbon Dioxide and Phosphine Mixture

摘要: 目前,储烟害虫防治普遍采用磷化铝片剂常规熏蒸法,磷化铝施用量为6~9g/m₃,安全上存在一定的隐患。为了减少磷化铝用药量,于2003年应用微电脑控制的仓外混合熏蒸机,施用钢瓶装液化二氧化碳和56%磷化铝片剂,进行了二氧化碳与磷化氢混合熏蒸杀虫试验,以8g/m₃磷化铝常规熏蒸法为对照。试验结果表明,磷化铝施用量为2.3g/m₃、二氧化碳施用量为12g/m₃,混合熏蒸结果达到100%杀死害虫。与对照相比,杀虫效果相同,混合熏蒸法具有磷化铝施用量较小、较为安全和有利于减少污染等优点。

Abstract: In order to reduce applied rates of aluminium phosphide, pest control experiments using the mixture of bottled liquefy carbon dioxide and 56% aluminium phosphide troche as fumigant were conducted with computer-controlled outdoor mixing and fumigating device. The result showed that the control effect was 100% by fumigating the mixture of 2.3g/m 3 aluminium phosphide and 12g/m 3 carbon dioxide. By using less aluminium phosphide, this method was safer and could reduce environment pollution.