电磁感应方法在土壤盐渍化评价中的应用研究

本文应用电磁感应方法（大地电导率探测仪EM38），对新疆焉耆盆地的土壤电导率进行了测量，分析了电磁感应方法所得结果和土样分析结果之间的相关关系，证实了电磁感应方法的有效性。基于电磁感应方法测量的结果，对新疆焉耆盆地土壤盐渍化进行了定性评价。结果表明，在开都河上游，土壤盐渍化程度普遍较轻：在中游地带，灌医内的上壤盐渍化改良取得了一定的成效，土壤中的含盐量较低，但是在远离河谷的非灌区，土壤含盐量依然很高；在下游及靠近博斯腾湖的地区，土壤含盐量普遍较高，并有随深度增加而增加的趋势。

Application of electromagnetic method to soil salinization assessment

Soil electrical conductivity in Yanqi Basin,Xinjiang,was measured using the electromagnetic inductive method(EM38).By measuring conductivity of saturated soil solution of soil samples which were taken as EM38 tested units,the correlations between results of EM38 and sampling-analysis method were analyzed and the serviceability of EM38 were verified.Based on the results of EM38,soil salinization in Yanqi Basin,Xinjiang,was qualitatively assessed.The results show that,at the upstream of the Kaidou River,soil salinization is very weak; at middle reaches of the river,salinization improvement was a success in some irrigated areas,salt in the soil is very little,but in non-irrigated area,far away from the river,the salt percentage in soil is still very high;at the lower reaches of the Kaidou River,soil salinization is strong and there is a trend that the salinization increases with depth.The results of salinity assessment provide primary information for investigations,preventions and improvements of salinization,and are of important significance.