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本文利用电磁感应技术对典型地块进行调查,研究其盐渍化空间异质性。通过样品采集分析和电磁感应测定,建立不同土层深度的土壤盐分电磁感应解译模型,经过在研究区域网格布点,测定表观电导率,解译获取不同土层深度盐分含量,并利用GIS空间分析,研究盐渍化空间异质性。研究结果表明,土层盐分含量与表观电导率具有良好相关性,相关性决定系数分别为0.874、0.837和0.853,有利于实现土壤盐渍化的快速诊断;研究区域盐分含量随深度增加而降低,呈现明显的表聚趋势;需加强监控,以促进土壤改良和土地的可持续利用。
In this paper, using electromagnetic induction technology to investigate the typical plots to study the salinization of spatial heterogeneity. Through the sample collection and analysis and electromagnetic induction measurement, the soil salinity electromagnetic induction model with different soil depths was established. After studying the regional grid distribution, measuring the apparent conductivity and interpreting the salt content of different soil depths, Spatial analysis to study spatial heterogeneity of salinization. The results showed that there was a good correlation between soil salt content and apparent conductivity, and the correlation coefficients were 0.874, 0.837 and 0.853, respectively, which could facilitate the rapid diagnosis of soil salinization. The salinity of the study area decreased with depth , Showing a clear trend of surface aggregation; need to strengthen monitoring to promote soil improvement and sustainable use of land.