用土壤浸出液的主要阴离子总量计算土壤盐分总量的方法

Using Total Value of Main Anions in Extract Liquidfrom Soil to Calculate Total Salt in Soil

本文探讨了用测得的主要阴离子总量（Ｃ∑Ａ来计算土壤盐分总量的方法，并举例试算。经验证表明，这一计算方法不仅精度高，适应范围也广，凡土壤盐分在０．０５％～５０．０％范围内，不受地域抑制，也不受盐渍土类别的化学组成差异影响，其计算结果与离子总量比较，相对误差均小于±１０％，其中小于５％者可达９０％以上，由于获取Ｃ∑Ａ数值简便，可在基层化验室试用。

Test and calculation confirmed that this method was highly accurate and well adapted when the total saltin soil ranged from 0. 05% to 50. 0%. Comparing the result calculated with the actual total ion content, therelative error was less than ±10%, and less than ±5% for more than 90% of samples, being free from in-fluence by regions and chemical composition of the saline soil. As it is easy to test the total content of mainanions, this method can be used in any laboratory.