| 高硒高镉区土地安全区划方法 |
| 摘要点击 2685 全文点击 994 投稿时间：2019-05-02 修订日期：2019-06-06 |
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| 中文关键词 镉 硒 吸收模型 拮抗作用 安全区划 建议 |
| 英文关键词 cadmium selenium absorption model antagonistic effect safety zoning suggestion |
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| 中文摘要 |
| 湖北恩施地区土壤中硒资源非常丰富，但土壤中也存在一定程度的镉污染风险，为了科学地开发富硒资源，选择典型高硒高镉区恩施市沙地乡为研究对象，结合玉米镉硒吸收模型，提出土地安全区划方法.对比硒的健康效应对土地安全区划结果的影响发现，硒对镉的拮抗作用可以减少农耕区严格管控区面积，提高土地利用效率.结合研究区各类农作物中镉硒的含量特征，建议优先保护区及安全利用区大力发展富硒农产品，结构调整区种植玉米与茶叶. |
| 英文摘要 |
| The selenium in the soil of Enshi, Hubei Province, is very rich, but there is also a certain degree of cadmium pollution risk. To scientifically utilize selenium-rich resources, a typical high-selenium and high-cadmium area in Shashi Township, Enshi City was selected as the research object. Combined with the corn cadmium selenium absorption model, a land safety zoning method was proposed. Comparing the health effects of selenium with the results of land safety zoning, it was found that the antagonism of selenium on cadmium can reduce the area of strict control of agricultural areas, and improve land use efficiency. Combined with the characteristics of cadmium and selenium in various crops in the study area, it is recommended for priority protection areas and safe-use areas to vigorously develop selenium-enriched agricultural products, and grow corn and tea in the structural adjustment area. |
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