广西钟山县主要农用地土壤硒的地球化学特征  

Geochemical characteristics of soil selenium of main agricultural land in Zhongshan County of Guangxi

作　　者：蒋惠俏[1] 陆国斌[1] 赵震云 黄英[1] 杨少伟 龙婧宇 JIANG Huiqiao;LU Guobin;ZHAO Zhenyun;HUANG Ying;YANG Shaowei;LONG Jingyu(Guangxi Institute of Regional Geological Survey,Guilin 541003,Guangx,China)

机构地区：[1]广西区域地质调查研究院,广西桂林541003

出　　处：《矿产与地质》2020年第2期339-346,共8页Mineral Resources and Geology

基　　金：广西壮族自治区财政专项资金项目“广西钟山县土地质量地球化学评价项目”(任务书编号:桂地矿办〔2017〕33号)资助。

摘　　要：通过对钟山县主要农用地的土壤硒进行系统调查,结果显示:研究区表层土壤硒含量平均值为0.41 mg/kg,富硒土壤分布范围广,足硒和富硒土壤占总面积的90.13%;土壤类型中,黄壤中的硒含量最高,平均值为0.52 mg/kg,洪积土中的硒含量最低,平均值为0.34 mg/kg;硒在酸性土壤中的含量最高,次为中性土壤,最低为碱性土壤;土壤中硒含量的主要影响因素为地层、成土母质、铁铝含量和pH值;研究区土地质量良好,富硒农产品主要为水稻和玉米,富硒土地资源具有良好的开发前景。A systematic investigation of soil selenium of main agricultural land is carried out in Zhongshan County.The result shows that the average content of Se in the surface soil is 0.41 mg/kg in the study area,and the range of Se enriched soil is wide.The area of sufficient Se and Se-rich soil accounts for 90.13%of the total area.Among the soil types,the content of Se in the yellow soil is the highest,with an average value of 0.52 mg/kg,while that in the proluvial soil is the lowest,with an average value of 0.34 mg/kg.The content of Se in the acid soil is the highest,the second is the neutral soil,and the lowest is the alkaline soil.The main influencing factors of soil selenium content are stratum,parent material,iron and aluminum contents and pH value.The land quality is good in the study area,and the selenium-rich agricultural products are mainly rice and corn.There is a good development prospect for the selenium-rich land resources.

关 键 词：硒 土壤调查 地球化学特征 富硒农业 钟山县 广西 

分 类 号：P595[天文地球—地球化学] X825[天文地球—地质学]