在短时间（４～７ｄ）内，用等渗的ＮａＣｌ和ＮａＣｌ并在根际加压（ＮａＣｌ＋Ｐ）分别处理非盐生植物棉花和盐生植物滨藜后，两者幼苗的叶相对扩展率、蒸腾率、木质部汁液渗透势及叶组织中的Ｋ＋含量均降低，而叶细胞质膜透性、木质部汁液和叶组织中Ｎａ＋的含量均有增加．ＮａＣｌ＋Ｐ处理能减轻等渗ＮａＣｌ对植物产生的伤害效应，对棉花可减轻约５０％，对滨藜减轻程度更大．这说明两种植物所遭受的短期盐害均与离子毒害和渗透胁迫两种效应有关．在非盐生植物棉花中，离子毒害和渗透胁迫的作用程度基本相当；而在盐生植物滨藜中，起主要作用的是渗透效应 In a short period of time (4 ~ 7d), the relative expansion rate of leaves of the two seedlings after treatment of non-halophyte cotton and halophyte Atriplex with isotonic NaCl and NaCl and rhizosphere pressure (NaCl + P) Transpiration rate, xylem juice osmolality, and K + content in leaf tissue decreased, while the plasma membrane permeability of leaf cells, Na + content in xylem juice and leaf tissue increased. NaCl + P treatment can reduce the injurious effect of NaCl on plants, reduce cotton by about 50%, and relieve more to Atriplex. This shows that the two plants suffered short-term salt damage both ion toxicity and osmotic stress on the two effects. In non-halophyte cotton, the degree of ion toxicity and osmotic stress is basically the same; while in the halophyte halophiles, the main effect is osmotic effect