对江淮烟区未施药烟田中烟蚜的发生情况进行了２年调查，结果表明，烟蚜种群数量消长呈明显的双峰型；红色烟蚜在第２个高峰期是主要类型。同时用浸渍法分别检测了红、绿色烟蚜对３种药剂的敏感性，发现红色烟蚜敏感性低。 Two years of investigation on the occurrence of aphids in the non-applied tobacco fields of Jianghuai tobacco area showed that there was an obvious bimodal pattern in the population growth and decline of the populations of Myzus persicae and the main type of red aphids was in the second peak. At the same time, the sensitivities of red and green aphids to three kinds of pesticides were detected by dipping method respectively, and the sensitivity of the red aphids was low.