采用室内培养法观察了不同浓度的NaCl及NaCl+Na_2CO_3混合溶液胁迫条件下‘同德’老芒麦(Elymus sibircus‘Tong de’)种子的发芽率及胚根和胚芽的生长状况。结果表明,Na+浓度为15 mmol·L-1时,NaCl+Na_2CO_3胁迫下发芽率显著高于对照。随着各种盐溶液浓度的升高,胚根的生长均呈下降趋势,因此可以用胚根的生长长度来判断‘同德’老芒麦种子萌发对盐的抗性强弱。 The indoor germination method was used to observe the germination rate and the growth of radicle and germ under the stress of different concentrations of NaCl and NaCl + Na_2CO_3 mixed solutions in ’Tongde’ sibircus’Tongde ’. The results showed that when Na + concentration was 15 mmol·L-1, the germination rate under NaCl + Na_2CO_3 stress was significantly higher than that of the control. With the increase of salt concentration, the growth of radicle decreased, so the length of radicle could be used to judge the salt resistance of ’Tongde’.