采用幼苗盆栽和根际袋法研究。结果表明，８个烟草品种根际土ｐＨ比非根际土ｐＨ低０３５～０５１个单位，地方性品种比引进品种根际土ｐＨ有更明显的变低趋势。根际土壤有效磷含量低于非根际土，呈亏缺状态。不同品种的亏缺程度不同，亏缺率变化于１４％～３５％，有效磷（Ｐ）浓度梯度变化于５５～１１５ｍｇ／ｋｇ之间，Ｇ１４０和大叶两个品种的亏缺率与浓度梯度最大，ＮＣ８９品种最小。 Seedling pots and rhizosphere bag method were used. The results showed that the rhizosphere soil pH of the eight tobacco cultivars was 035 ~ 051 units lower than that of the non-rhizosphere soil, and the local cultivars had a significantly lower pH than the rhizosphere soil of the introduced cultivars. Rhizosphere soil available phosphorus content than non-rhizosphere soil, was in a deficit state. Different varieties have different deficits, the deficit rate changes from 14% to 35%, the effective phosphorus (P) concentration gradient changes from 55 ~ 115mg / kg, the deficiencies of G140 and big leaf The largest rate and concentration gradient, NC89 smallest species.