【摘要】 在 5 8m× 2 4m的新建粮仓中 ,采用 0 .2mmPVC压延膜 ,对散装粮堆实施单面密闭。在负压状态下 ,半衰期为 15 3秒。在 786 6m3粮堆中投AlP 6kg ,PH3气体有效浓度保持32天以上 ,既能杀死抗性害虫 ,对虫卵和蛹也有较强的抑制作用 ,取得了一次施药 2年无虫的良好效果。在 31小时内PH3气体浓度比达到 0 .75。保管费用减少 5 0 %。更多还原

【Abstract】 The grain bulk was covered with 0.2mm thick PVC in large warehouse (The decline half time was 153s).AlP(6kg) was applied in grain bulk (7866m 3).The results showed that the effective concentration of PH 3 can maintain above 32 days.It can kill all the resistant insects,and had good controlling effect on ovum and pupa,and no insects can be found in 2 years by applyin only once.The concentration ratio of PH 3 reached 0.75 in 31 hours.It also can save 50% costs.更多还原