论文部分内容阅读
在盐碱土改良利用研究中,水溶性盐分的测定是一个重要项目.当进行土壤的水溶性盐分(或水质的盐分)分析结果计算时,常常要以下面的三种形式表达盐分含量,即每百克土中(或每升水质中)所含某种可溶性盐的阴离子(如Cl~-)的毫克当量数(me)、克重数(g)和换算成钠盐(NaCl)的克重数(这一数值是对滨海盐碱土而言),以及阳离子(如Ca~(++))的毫克当量数和克重数.这样,一个样品的分析结果的计算就须要二、三次完成,这在大批样品分析计算时,费工不少.
In the study of the improvement and utilization of saline-alkali soil, the determination of water-soluble salt is an important project.When soil water-soluble salt (or salt water) analysis results are calculated, it is often necessary to express the salt content in the following three forms, namely Milliequivalents (me), grams (g), and grams of sodium salt (NaCl) of anions (such as Cl ~ -) of a soluble salt contained in a hundred grams of earth (or per liter of water) (This value is for coastal saline soils), and the milliequivalents and weights for cations (such as Ca ~ (++)) so that the calculation of a sample’s analysis takes two or three passes, This is a lot of sample analysis and calculation, a lot of work.