在塑料大棚内采用盆栽试验法,以毛叶山桐子(Idesia polycarpa var.vestita)1年生苗为对象,研究盐胁迫对其生长的影响。结果表明:毛叶山桐子在Na Cl<0.25%胁迫下,幼苗的形态特征、株高和地径变化趋势与对照一致,生长影响不大;在NaCl≥0.25%胁迫下,9 d后大部分幼苗叶片萎蔫凋落,18 d后大部分植株死亡。所以,毛叶山桐子耐盐临界浓度在0.1%左右。 Pot experiments were conducted in a plastic greenhouse to study the effect of salt stress on the growth of one-year-old seedlings of Idesia polycarpa var. Castita. The results showed that under the stress of NaCl <0.25%, the morphological characteristics, plant height and diameter of T. mongolica seedlings were consistent with those of the control. The growth of seedlings was not affected by the NaCl stress of 0.25% The leaves wilted, most of the plants died after 18 days. Therefore, the critical concentration of salt-mulberry Tongzi salt at about 0.1%.