【目的】了解成都平原崇州市典型农田土壤中铬的含量状况与空间分布特征。【方法】采用混合取样的方法采集68个土壤样品，对铬含量进行室内分析测试，以样点测试结果为基础，采用地统计学和方差分析等方法，研究分析土壤中的铬含量状况与空间分布特征。【结果】研究区土壤铬含量在76．74～127．90 mg／kg 之间，平均为99．85 mg／kg，没有样本点超过国家土壤环境质量二级标准。地质累积指数法评价表明研究区土壤有17．65％的样点受到铬的影响，总体呈现低等程度的潜在生态风险。半方差分析表明，土壤铬的块金值与基台值之比为0．30，具有中等空间相关性。铬含量的空间分布规律明显，表现出由西南向东北逐渐升高的趋势。含量差异主要受成土母质的影响。【结论】研究区土壤铬含量符合农田含量标准，其空间差异受结构因素与随机因素共同影响，总体呈现低生态风险。%Objective]The aim of the study was to explore the chromium content and spatial dis-tribution in Chongzhou typical farmland of Chengdu plain.[Method]68 soil samples were collect-ed and their chromium content was analyzed.On the basis of the sample test results,spatial dis-tribution of chromium was investigated using geostatistical methods and variance analysis.[Re-sults]The soil chromium content in the area was ranged from 76.74 mg/kg to 127.90 mg/kg, with an mean value of 99.85 mg/kg.All samples were lower than that of the national soil envi-ronmental quality standards.Geoaccumulation index evaluation showed that 17.65% of soil sam-ples were affected by chromium,suggesting that overall potential ecological risk was low.Semi-variance analysis showed that the ratio of nugget to sill was 0.30,with a moderate spatial correla-tion.Spatial distribution of chromium was significant and soil chromium increased from southwest to northeast.The difference was mainly affected by soil parent material.[Conclusion]The soil chromium contents meet the standards of soil farmland,indicating that ecological risk is low.
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