本文应用动力学研究方法比较了具有不同耐盐性的3组共6个水稻基因型对NaCl吸收和运转的差异,结果表明,在外部低NaCl浓度(0.1mmolL~(-1)时,水稻对Na~+的吸收为被动吸收,耐盐基因型对Na~+的吸收速率显著低于盐敏感基因型;对Cl~-的吸收为主动吸收,不同耐盐性基因型吸收Cl~-的动力学参数(V_(?)、K_(?))差异不显著,在外部高NaCl浓度(50mmolL~(-1))时,耐盐基因型对Na~+和cl~-的吸收速率均低于对应的盐敏感基因型。耐盐基因型水稻的Na~+、cl-从根部向地上部的运转率低于对应的盐敏感基因型,这种差异在高盐浓度时更为明显。表明了耐盐基因型水稻地上部对NaCl的排斥作用是吸收控制和运转控制共同作用的结果,使地上部Na~+、Cl-含量相对降低而显出较高的耐盐性。 In this paper, the difference of NaCl uptake and translocation between six rice genotypes with different salt tolerance in three groups was compared by kinetic method. The results showed that at the low NaCl concentration (0.1 mmol L -1) The absorption of Na ~ + was passive absorption, and the salt - tolerant genotype had a significantly lower Na ~ + absorption rate than the salt - sensitive genotype. The absorption of Cl ~ - was active absorption and the absorption of Cl ~ - by different salt tolerance genotypes There was no significant difference between the two parameters (V _ (?) And K_ (?)). When the external NaCl concentration was high (50 mmol L -1), the absorption rate of Na ~ + and Cl ~ Corresponding salt-sensitive genotypes.The salt-tolerant genotype rice Na ~ +, cl- from roots to shoots lower than the corresponding rate of salt-sensitive genotypes, the difference is more obvious at high salt concentrations. Salt-tolerant genotypes of rice in the upper part of the exclusion of NaCl is the absorption control and operational control of the combined effect of the aboveground Na ~ +, Cl-content was relatively reduced and showed higher salt tolerance.