【摘要】 记录并研究了来自中国黄土高原的４个根瘤菌新种群的中心菌株和代表菌株的菌体红外光谱，发现它们有羰基型和非羰基型两种光谱类型，二者可以根据有无１７２５ｃｍ￣（－１）带而区分。更多还原

【Abstract】 The infrared spectra of four new species groups of Rhizobium fromLoessPlateau in China was recorded in this paper. In the course of investigations,itwas ob-served that the four nes species groups of 8 strains had unique spectra with noband at 1725 cm￣(-1).The Rhizobium possessed two infrared types,i.e. 1725 type and no 1725 type.更多还原