【目的】 赤拟谷盗Tribolium castaneum、米象Sitophilus oryzae和谷蠹Rhyzopertha dominica是目前为害较为严重的储粮害虫，因其较高的磷化氢抗性是目前粮食储藏过程最难防治的3种害虫。本研究旨在评价储粮防护剂和磷化氢联用对赤拟谷盗、米象和谷蠹的防治效果，以期为缓解储粮害虫的磷化氢抗性及其在实仓中综合防治提供理论依据。【方法】 采用55%甲基嘧啶磷乳油、75%马拉硫磷乳油和2%溴氰·甲嘧磷粉剂分别和磷化氢联用，以3种害虫的虫口密度情况作为评价指标，对位于广东、福建和河南3个不同储粮生态区粮库中的赤拟谷盗、米象和谷蠹进行防治效果测定。【结果】 在磷化氢熏蒸粮食之前，用55%甲基嘧啶磷乳油、75%马拉硫磷乳油或2%溴氰·甲嘧磷粉剂处理粮面表层的粮食，结果表明3种储粮防护剂在3个粮库的实验粮仓内对赤拟谷盗、米象和谷蠹的防治效果优于单一磷化氢熏蒸。在福建南平粮库使用75%马拉硫磷乳油与磷化氢联用后8个月对谷蠹的防治效果为100%；广东湛江粮库 2%溴氰·甲嘧磷与磷化氢联用后8个月未出现米象活动；在河南汤阴粮库使用55%甲基嘧啶磷乳油与磷化氢联用8个月未出现赤拟谷盗。【结论】 55%甲基嘧啶磷乳油、75%马拉硫磷乳油或2%溴氰·甲嘧磷粉剂和磷化氢联用与单一磷化氢熏蒸相比对赤拟谷盗、米象、谷蠹具有很好的防治效果。

 [Aim]  To improve the effectiveness of phosphine for controlling three major pests of stored grain; Tribolium castaneum, Sitophilus oryzae, and Rhyzopertha dominica. [Methods]  The effectiveness of 55% imidacloprid emulsifiable concentrate, 75% malathion emulsifiable concentrate, and 2% deltamethrin·imidacloprid powder, in combination with phosphine, was evaluated for controlling T. castaneum, S. oryzae and R. dominica in grain depots in three different ecological regions of Guangdong, Fujian and Henan. [Results]  Treating the grain surface layer with either 55% imidacloprid emulsifiable concentrate, 75% malathion emulsifiable concentrate, or 2% deltamethrin·imidacloprid powder, before phosphine fumigation, significantly affected the control of T. castaneum, S. oryzae, and R. dominica. The best result was 100% mortality of R. dominica in the Nanping depot in Fujian. The use of deltamethrin·imidacloprid in conjunction with phosphine to control S. oryzae in the Zhanjiang depot in Guangdong only achieved 55% mortality. [Conclution]  However, a combination of phosphine and either 55% imidacloprid emulsifiable concentrate, 75% malathion emulsifiable concentrate, or 2% deltamethrin·imidacloprid powder, effectively controlled T. castaneum, S. oryzae and R. dominica in stored grain.