| 周泽,伍远学,杨磊,程海霞.贵州省紫云县耕地土壤元素组合特征及硒元素分布特征[J].贵州地质,2020,37(4):539-545 |
| 贵州省紫云县耕地土壤元素组合特征及硒元素分布特征 |
| The Characteristics of Soil Selenium Distribution and Element Combination in Cultivated Land of Ziyun County, Guizhou Province |
| 投稿时间：2020-06-29 |
| DOI： |
| 中文关键词: 富硒 元素组合特征 地球化学 耕地土壤 紫云县 贵州 |
| 英文关键词:Selenium-rich soil Characteristics of element combinations Geochemistry Cultivated soil Ziyun county Guizhou province |
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| 摘要点击次数: 358 |
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| 中文摘要: |
| 通过广泛收集整理前人研究成果、紫云县地质、环境、自然地理、区域地质背景等资料，测试分析区内1∶5万耕地质量地球化学采集的5720件表层土壤样品；运用地球化学指标评价全区硒元素地球化学等级，并基于SPSS软件对样品测试结果进行了聚类分析与相关性分析。结果表明:区内富硒耕地资源较为丰富，全区富硒耕地土壤达5336万亩，占全区耕地土壤面积6681%；硒与镉元素伴生关系与所在的地质背景关系密切，碳酸盐岩富硒区易富集镉元素，而泥页岩、煤系、硅质岩等富硒区镉元素含量则相对较低。研究结果不仅能为区内富硒耕地土壤的安全利用提供理论依据，也能推动区内发展高品质富硒农产品，促进当地农业产业结构良性调整，加快当地经济发展。 |
| 英文摘要: |
| By collect the former research results, the surrounding geology, environment, natural geography and regional geological background of Ziyun county were collected and sorted out.A total of 5355 topsoil samples from 1∶50000 cultivated land mass geochemical data were analyzed.Then the geochemical index was used to evaluate the geochemical grade of selenium in the whole region.Based on SPSS software, cluster analysis and correlation analysis were carried out on the test results of samples.The results are shown below.Firstly, the cultivated land rich in selenium is relatively rich in the region. The cultivated land rich in selenium has soil of 533 600 mu, accounting for 66.81% of the cultivated land area in the region.Secondly, the associated relationship between selenium and cadmium is closely related to the geological background.Cadmium is easy to be enriched in the selenium-rich areas of carbonate rocks, while the content of cadmium in the selenium-rich areas such as mud shale, coal measures and siliceous rocks is relatively low.The research results can not only provide theoretical basis for the safe utilization of selenium-rich cultivated land in the region, but also promote the development of high-quality selenium-rich agricultural products in the region, promote the benign adjustment of local agricultural industrial structure, and accelerate the development of local economy. |
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