韩姚飞,沈小庆,张德实,洪万华.贵州省江口县硒、锗特色耕地资源分布规律研究[J].贵州地质,2020,37(3):320-328
贵州省江口县硒、锗特色耕地资源分布规律研究
Study on Se, Ge Special Cultivated Land Resource Distribution Regulation in Jiangkou County, Guizhou Province
投稿时间:2020-03-25  
DOI:
中文关键词:      特色耕地  影响因素  江口县
英文关键词:Se  Ge  Special cultivated land  Influencing factor  Jiangkou county
基金项目:
作者单位
韩姚飞 贵州省地质矿产勘查开发局103地质大队贵州铜仁554300 
沈小庆 贵州省地质矿产勘查开发局103地质大队贵州铜仁554300 
张德实 贵州省地质矿产勘查开发局103地质大队贵州铜仁554300 
洪万华 贵州省地质矿产勘查开发局103地质大队贵州铜仁554300 
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中文摘要:
      根据江口县耕地质地球化学调查评价2896件表层土测试数据,分析评价表明:江口县表层土壤硒含量背景值042 mg/kg,总体达到富硒等级,富硒耕地面积达到9027%;锗含量背景值161 mg/kg,达到富锗等级,富锗耕地面积达到6049%。通过对不同成土母岩、土壤类型、土地利用方式、土壤理化性质与硒、锗含量关系的分析研究表明:土壤中硒(Se)、锗(Ge)元素主要来源于成土母岩,含量水平除受母岩、土壤类型和土地利用方式影响外,同时受土壤理化性质的影响。线性回归分析表明:土壤Se与pH值呈极弱负相关性,与SOM(有机碳)呈极弱相关性,与Cu和Hg呈中等程度相关性,与Mo、V、Tl元素呈强相关性;土壤Ge与pH值呈弱负相关性,与SOM和Se呈极弱相关性,与K元素呈中等程度相关性。
英文摘要:
      According to 2896 surface soil test data of cultivated land geochemical survey and evaluation in Jiangkou county, it’s shows the Se background value in the surface soil of Jiangkou county is 0.42 mg/kg, generally achieve the grade of rich selenium and the area of Se-rich cultivated land is 90.27%. The Ge background value is 1.61 mg/kg, achieve the grade of rich Ge and the area of Ge-rich cultivated land is 60.49%. By study different soil forming rock, soil type, land use patterns, physical and chemical properties of soil and relation of Se and Ge content, it shows Se and Ge in the soil mainly comes from the soil forming rock, the content is influenced by the mother rock, soil type, land use pattern and physical and chemical properties. The linear regression analysis shows soil Se present very weak negative relativity with pH value and SOM, present middle class relativity with Cu and Hg, present strong relativity with Mo, V and Ti. Soil present very weak negative relativity with pH value, present very weak relativity with SOM and Se, present middle class relativity with K.
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