图1. 灰绿型羊草（GG）与黄绿型羊草（YG）非根际土壤及根际土壤微生物碳和氮含量对盐碱胁迫的响应
灰绿型羊草土壤微生物碳含量（A）;黄绿型羊草土壤微生物碳含量（B）;灰绿型羊草土壤微生物氮含量（C）;黄绿型羊草土壤微生物氮含量（D）;不同大写字母表示根际土壤或非根际土壤在盐碱处理间差异显著;不同小写字母表示在某一特定盐碱处理条件下非根际土壤和根际土壤之间差异显著

Fig. 1. Response of microbial biomass carbon and microbial biomass nitrogen content of bulk soil and rhizosphere soil of the grey green (GG) and yellow green (YG) ecotypes of L. chinensis to the salt-alkaline stress
The microbial biomass carbon content (MBC) in grey green ecotype of L. chinensis (A); The microbial biomass carbon content (MBC) in yellow green ecotype of L. chinensis (B); The microbial biomass nitrogen content (MBN) in grey green ecotype of L. chinensis (C); The microbial biomass nitrogen content (MBC) in yellow green ecotype of L. chinensis (D); Different uppercase letters indicate significant differences between the salt-alkaline treatments for either bulk soil or rhizosphere soil; Different lowercase letters indicate significant differences between the bulk soil and rhizosphere soil