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为了探讨典型盐渍化土壤分布地区土壤微量元素的空间变异特征,并且给盐渍土微量元素养分诊断与施肥的准确性采样提供参考依据。采用地统计学方法,对土默川平原中部盐渍土有效态微量元素Fe、Mn、Cu、Zn、B和Mo含量的空间变异特征进行了研究。结果表明,研究区土壤有效Fe、Mn、Cu、Zn、B和Mo含量分别为5.18 mg/kg、3.54 mg/kg、0.91 mg/kg、0.33 mg/kg、2.54 mg/kg和0.11 mg/kg,有效态Zn和Mo较缺乏,6种微量元素均属中等变异强度。研究区有效态微量元素Fe、Mn、Cu、Zn和Mo具有中等或偏弱的空间相关性,B具有较强的空间相关性;6种微量元素有效态含量的变程大小顺序为Zn>Mn>Cu=Fe>B>Mo。6种微量元素表现出条带状和斑块状的空间分布。
In order to explore the spatial variability of soil trace elements in the salinized soils, and to provide a reference for the accurate sampling of nutrients and nutrients in the trace elements in salty soils. The spatial variability of the available trace elements Fe, Mn, Cu, Zn, B and Mo in saline soil in the central Tumchuan Plain was studied by means of geostatistics. The results showed that the available Fe, Mn, Cu, Zn, B and Mo contents in soil were 5.18 mg / kg, 3.54 mg / kg, 0.91 mg / kg, 0.33 mg / kg, 2.54 mg / kg and 0.11 mg / kg , The available Zn and Mo are scarce, and the six trace elements belong to moderate variation intensity. The effective trace elements Fe, Mn, Cu, Zn and Mo in the study area have moderate or weak spatial correlation, while B has strong spatial correlation. The order of effective range of six trace elements is Zn> Mn > Cu = Fe> B> Mo. The six trace elements show the spatial distribution of banded and plaque.