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[目的]研究河套农业经济区玉米产区生态地球化学特征。[方法]通过采集研究区玉米根系土及玉米各部位样品,分析了根系土和玉米各部位地球化学特征。[结果]灌淤土中大部分元素含量相对较高;大多数元素在玉米的茎叶中相对富集;F、Mn、Co元素在根中相对富集;N元素在籽实中强烈富集,Zn、F在籽实中相对较富集。[结论]建议河套地区富F的土壤环境中要采用低F化肥。玉米种植区均需要增加氮肥。对化肥中的各有害元素需进行控制。
[Objective] The research aimed to study the eco-geochemical characteristics of corn producing areas in Hetao Agricultural Economic Zone. [Method] The geochemical characteristics of root soil and various parts of corn were analyzed by collecting samples of corn root soil and corn in the study area. [Result] Most of the elements in irrigation silt soil were relatively high; most of the elements were relatively enriched in stems and leaves of maize; F, Mn and Co elements were relatively enriched in the roots; N element was strongly enriched in the seeds, Zn and F are relatively rich in seed. [Conclusion] It is suggested that low-F fertilizer should be used in F-enriched soil environment in Hetao. Corn growing areas need to increase nitrogen fertilizer. The harmful elements in the fertilizer need to be controlled.