【摘要】 提取Ｆｒａｎｋｉａ菌１６ＳｒＲＮＡ，制备具专一性的寡核苷酸探针，通过同源杂交，在人工接种的木麻黄根际内检测出痕量Ｆｒａｎｋｉｓ菌结果表明，Ｆｒａｎｋｉａ可在环境因子的作用下被动迁移不论接种点的位置如何，经６个月的时间稳定后，其分布状态基本相同，主要集中于土层下８～３０ｃｍ处更多还原

【Abstract】 Trace Frankia in the rhizosphere of deuarina cunninghamiana can betected through hybridization of Frankia 16SrRNA with synthetic speific complementary oligonucleotides.The results show that Frarrkia are migrated under the influence of environmental factors. After 6 months, their distributions in different inoculation points are samilar, and concentrating at 8 ～30 cm soil layer.更多还原