胡秋,卫永华,温金奎,娄皓,王浩.贵州省龙里县耕地土壤硒含量分布特征及影响因素分析[J].贵州地质,2020,37(3):329-333, 297
贵州省龙里县耕地土壤硒含量分布特征及影响因素分析
Distribution Characteristics and Influencing Factors of Soil Selenium Content of Cultivated Land in Longli County,Guizhou Province
投稿时间:2020-03-29  
DOI:
中文关键词:  土壤  硒含量  分布特征  影响因素  龙里县
英文关键词:Soil  Selenium content  Distribution characteristics  Influencing factors  Longli county
基金项目:贵州省耕地质量调查(黔耕调2017-03);贵州省有色金属和核工业地质勘查局项目“龙里县耕地质量地球化学调查评价”(黔色勘2017-64号)。
作者单位
胡秋 贵州省有色金属和核工业地质勘查局七总队贵州贵阳550005 
卫永华 贵州省有色金属和核工业地质勘查局七总队贵州贵阳550005 
温金奎 贵州省有色金属和核工业地质勘查局七总队贵州贵阳550005 
娄皓 贵州省有色金属和核工业地质勘查局七总队贵州贵阳550005 
王浩 贵州省有色金属和核工业地质勘查局七总队贵州贵阳550005 
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中文摘要:
      针对龙里县土壤分布情况,系统采集土壤样品3000余件。运用Pearson相关分析、回归分析、统计分析,研究龙里县土壤中硒含量的分布特征和影响因素。结果表明,研究区土壤全硒含量变幅为002651 mg/kg,平均值为065 mg/kg,变异系数为074,总体上以富硒土壤为主。在不同成土母质中,页岩(含炭质页岩)和灰岩发育的土壤全硒含量较高,白云岩和砂岩发育的土壤全硒含量相对较低。在不同土壤类型中,黄壤和粗骨土的全硒含量较高,水稻土全硒含量相对较低。Pearson相关分析表明,土壤全硒含量与pH呈负相关关系,与铁铝氧化物含量及有机质含量呈正相关关系。影响龙里县土壤全硒含量的主要因素是成土母质、土壤类型、土壤pH、铁铝含量及有机质含量。
英文摘要:
      According to the soil distribution in Longli County,more than 3 000 soil samples were systematically collected. Pearson correlation analysis, regression analysis and statistical analysis were used to study the distribution characteristics and influencing factors of selenium content in soil of Longli County. The results showed that the variation range of total se content was 0.026.51 mg / kg, the average value was 0.65 mg / kg, and the coefficient of variation was 0.74. In different parent materials of soil formation,the soil with developed shale (containing carbonaceous shale) and limestone has higher content of total selenium, while the soil with developed dolomite and sandstone has lower content of total selenium relatively . In different soil types, the content of total selenium was higher in yellow soil and fragmental soil,and lower in paddy soil. Pearson correlation analysis showed that the total selenium content was negatively correlated with PH, and positively correlated with Fe-Al oxide content and organic matter content. The main factors affecting the total selenium content of soil in Longli County are soil parent material, soil type, soil PH, iron and aluminum content and organic matter content.
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