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在局部虫害较严重的稻谷仓进行为期8天的局部环流熏蒸,结果表明:07型粮堆局部处理机进行粮堆局部环流熏蒸有效处理面积达20m~2左右(深度5～6m),经一次投药0.8kg,大部分区域PH_3浓度100～300mL/m~3可保持6～8天,边沿区域(离中心半径2.6m)的上层及表层PH_3浓度稍低。实仓杀虫效果检查:处理区域内表层0.5m以下害虫全部杀死,对表层发现的少许活虫,也提出了相应的对策。
The local circulation fumigation was carried out for eight days in the rice barn with the most serious pests. The results showed that the effective treatment area of the 07-type grain-handling unit local circulation fumigation was about 20m ~ 2 (depth 5 ~ 6m) The dosage of 0.8kg, the PH_3 concentration in most of the area of 100 ~ 300mL / m ~ 3 can be maintained for 6 ~ 8 days, the marginal area (from the center radius of 2.6m) upper and surface PH_3 concentration slightly lower. Real-time insecticidal effect check: deal with the surface of the sub-0.5m below the surface all the pests killed, found on the surface a little live insects, but also put forward the corresponding countermeasures.