钠吸附比及其在水体碱化特征评价中的应用

利用松嫩平原西部水体化学特征的测试数据，对其钠吸附比进行了系统的探讨.总体上，湖泡水体SAR值最高，承压水SAR值最低.研究了仅考虑溶液中Na+,Mg2+和Ca2+情况下的钠吸附比值(SARP)及离子对相互作用条件下的钠吸附比值(SARP），据统计结果建立了其相关关系.同时，探究了松嫩平原西部各种水体受碳酸平衡影响下的钠吸附比(SARP(ADJ)和SAPT(ADJ))，并对几种水体钠吸附比的计算方法进行对比，根据Richards(1954)的分级标准和松嫩平原西部水体的实际情况，将之应用于地表水和地下水的灌溉特性评价，提出了适合于当地水体碱化特征评价的钠吸附比评价标准。

Sodium adsorption ratio and its application to appraisement of alkali characteristics of water

According to the test data, the characteristics of Sodium Adsorption Ratio (SAR) for water in west part of Song-Nen Plain are studied systematically. The study result shows that SAR is being highest in lake and lowest in confined water. Furthermore, the relationship between the Ratio calculated from the concentration of Na^+ or Ca^2+ and the Ratio affected by ions in solution is revealed according to the statistic result. The Ratio affected by carbonate acid equilibrium is also studied. The relationship between SAR and Ph are explored and the methods for claculation of SAR are analyzed. On this basis, the appraisement on the feasibility of suing the water in west part of Song-Nen Plain to irrigation is given according to the calculation results and Richard's grade standard.