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首页> 外文期刊>土壤圈（英文版） >Electrical Conductivity in Soil Extracts: Chemical Factors and Their Intensity
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Electrical Conductivity in Soil Extracts: Chemical Factors and Their Intensity

机译：土壤提取物中的电导率：化学因素及其强度

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摘要

The electrical conductivity (EC) of 1:5 soil-water extract (EC1:5) was studied utilizing path coefficient analysis. The study focused on revealing the main chemical factors contributing to EC of soil extracts and their relative importance.Results showed that the most important factors influencing the EC1:5 of coastal salt-affected soils were the concentration of salt in 1:5 soil-water extract (Sc), Cl-, and the sodium adsorption ratio (SAR), while effects of pH, CO32-, HCO3-, soluble sodium percentage (SSP), and sodium dianion ratio (SDR) were very weak. Though the direct path coefficients between EC1:5 and SO42-, Ca2+, Mg2+, K+, or Na+ were not high, influence of other chemical factors caused the coefficients to increase, making the summation of their direct and indirect path coefficients relatively high. Evidences showed that multiple regression relations between EC1:5 and most of the primary factors (Sc, Cl-, and SAR) had sound reliability and very good accuracy.
机译：利用路径系数分析法研究了1：5土壤-水提取物（EC1：5）的电导率（EC）。本研究着重揭示了影响土壤提取物EC的主要化学因素及其相对重要性。结果表明，影响沿海盐渍土EC1：5的最重要因素是1：5土壤-水中的盐浓度提取物（Sc），Cl-和钠吸附率（SAR），而pH，CO32-，HCO3-，可溶性钠百分比（SSP）和钠二阴离子比率（SDR）的影响非常弱。尽管EC1：5与SO42-，Ca2 +，Mg2 +，K +或Na +之间的直接路径系数不高，但是其他化学因素的影响导致该系数增加，从而使它们的直接路径系数和间接路径系数之和相对较高。有证据表明，EC1：5与大多数主要因素（Sc，Cl-和SAR）之间的多元回归关系具有良好的可靠性和非常好的准确性。

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