调查西双版纳地区黄蚁Oecophylla smaragdina Fabricius对橡胶盔蚧Parasaissetia nigra (Nietner)种群数量和寄生蜂的影响.结果表明:黄蚁对橡胶盔蚧种群消长及寄生蜂均有影响.“有蚂蚁”枝条上介壳虫种群数量显著高于“无蚂蚁”枝条.“有蚂蚁”枝条介壳虫死亡率和寄生蜂都显著低于“无蚂蚁”枝条.说明黄蚁的存在影响了橡胶树介壳虫的种群繁殖率和死亡率.建议在今后综合防治中,充分利用蚂蚁与橡胶树介壳虫关系.通过驱逐橡胶树上的蚂蚁来有效遏制介壳虫的发生.“,”The effect of Oecophylla smaragdina Fabricius on Parasaissetia nigra (Nietner) population dynamics wasrninvestigated in Xishuangbanna. The results showed that O. smaragdina may influence P. nigra population dynamicsrnand its parasitic wasps. Population size of P.nigra was significantly higher on the branches of trees with ants thanrnthose without ants, and mortality and amount of parasitic wasps were significantly lower on trees with ants than thosernwithout ants. It was suggested that the interaction of O.smaragdina and P.nigra should be applied in IPM, inrnwhich ants should be excluded to control P. nigra .