贵州遵义地区耕地土壤锗元素分布特征与富集机理  

Distribution characteristics and enrichment mechanism of germanium element in arable soils of Zunyi area,Guizhou

作　　者：魏泽权[1] 郭宇 谯文浪 WEI Zequan;GUO Yu;QIAO Wenlang(Geological Brigade No.102,Guizhou Province Bureau of Geology and Mineral Exploration and Development,Zunyi 563003,Guizhou,China)

机构地区：[1]贵州省地矿局102地质大队,贵州遵义563003

出　　处：《矿产与地质》2021年第5期972-979,共8页Mineral Resources and Geology

基　　金：贵州省地矿局科研基金(黔地矿科合〔2020〕34号);贵州省财政资金项目(黔地矿耕调2017-26)共同资助。

摘　　要：开展耕地土壤锗(Ge)元素的分布特征及富集机理研究,为富锗土壤资源开发利用、农业结构调整、发展特色优质富锗农产品具有较大的现实意义。利用贵州遵义地区1∶5万耕地质量地球化学调查样品测试数据,采用空间叠加、相关性、线性回归、统计等方法进行分析。结果显示:该区耕地土壤中w(Ge)范围处于0.51×10^(-6)~2.59×10^(-6)之间,平均值为1.52×10^(-6),标准偏差为0.26×10^(-6),变异系数为0.17,总体分布特征呈正态分布;耕地土壤Ge含量与地层、土壤有机质、土壤酸碱度均具有弱相关性,不同成土母岩岩性形成的土壤Ge含量不同。通过分析各种可能因素认为研究区耕地土壤锗元素含量受相关因素影响有限。土壤母岩为泥岩夹灰岩时富Ge土壤的概率最大;中酸性环境富锗概率大于碱性环境;富锗概率随有机质含量的增加而增加。There is a great practical significance to carry out the research of distribution characteristics and enrichment mechanism of Ge element in arable soils for the development and utilization of germanium-rich soil resources,agricultural structure adjustment and development of special high-quality germanium-rich agricultural products.The sample data from 1:50000 geochemical survey of arable land quality in Zunyi area are used for analysis by spatial superposition,correlation,linear regression and statistical methods.The result shows that Ge content range of cultivated soils in this area is 0.51 mg/kg-2.59 mg/kg,with a average value of 1.52 mg/kg,standard deviation is 0.26 mg/kg,and coefficient of variation is 0.17.The overall distribution characteristics are normal distribution.The Ge content of cultivated soils is weakly correlated with strata,soil organic matter content and pH value,and the Ge content of soils formed by different soil-forming parent rocks is different.For the analysis of each possible factor it is considered that the germanium content of cultivated soils in the study area is limited by the relevant factors.The probability of Ge-rich soil is the highest when the parent rocks is mudstone intercalated with limestane.The probability of germanium enrichment is greater in medium acidic environment than that in alkaline environment.The probability of germanium enrichment increases with the increase of soil organic matter content.

关 键 词：富集机理 分布特征 锗 耕地 遵义地区 

分 类 号：P595[天文地球—地球化学] S151.9[天文地球—地质学]