| 孔鹏飞,刘志臣,任光明,王虎胜,郭宇,罗永双,姜先欢.贵州余庆耕地地球化学特征及对水稻、茶叶等农产品质量的影响[J].矿产勘查,2020,11(12):2610-2620 |
| 贵州余庆耕地地球化学特征及对水稻、茶叶等农产品质量的影响 |
| Geochemical characteristics of cultivated land in Yuqing Country, Guizhou Province and its influence on the quality of rice, tea and other agricultural products |
| 投稿时间：2020-10-14 |
| DOI： |
| 中文关键词: 地球化学特征 耕地表层土壤 水稻 茶叶 水果 农产品 余庆 贵州 |
| 英文关键词: geochemistry, surface soil of cultivated land, rice, tea, fruit, agriculture products, Yuqing, Guizhou Province |
| 基金项目:贵州省自然资源厅项目(编号:黔地矿耕调:2017-25)和贵州省地质矿产勘查开发局地质科研项目(编号:黔地矿科合[2019]5号)联合资助。 |
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| 中文摘要: |
| 贵州省余庆县是黔北地区农业大县,是优质水稻、茶叶、水果重要生产基地,耕地土壤中元素含量与农业生产、人体健康有密切关系,对余庆县耕地土壤地球化学及农产品元素特征进行研究具有重要的意义。本文以余庆县内4508件耕地表层土壤样品和102件农产品样品为研究对象,对土壤中Corg、N、P、K、B、Mn、Zn、Cu、Mo、Se、Ge、I、F、pH值、As、Cd、Cr、Hg、Pb、Co、Ni、V、Tl共23项指标进行了定量分析,对农作物中As、Cd、Cr、Hg、Pb、Se、Ge等7项指标进行了定量分析,耕地土壤中Hg、Mo、Cd、As、I、Cu、Mn、Pb元素的变异系数均大于0.6,这一特点与各指标的富集系数所呈现出的特征完全吻合。采用R型因子分析法并根据区域地质背景和气候、人类生产活动等主控因素,提取10个主因子对余庆县耕地表层土壤地球化学特征成因进行详细分析,10个主因子表明了余庆县83.494%的特征成因,农作物中元素含量特征取决于地质背景以及作物对元素的富集率。研究结果可以为区内的农业生产、土地规划、重金属动态监测等奠定重要的基础。 |
| 英文摘要: |
| Yuqing County is a large agricultural county in the north of Guizhou Province. It is an important production base of high quality rice, tea and fruit. The content of elements in the soil of cultivated land is closely related to agricultural production and human health.It is of great significance to study the soil geochemistry characteristics and genesis discussion in Yuqing County. In this paper, 4,508 pieces of plowing layer soil samples and 102 pieces of agriculture products samples in Yuqing County was studied, Corg, N, P, K, B, Mn, Zn, Cu, Mo, Se, Ge, I, F, Ph, As, Cd, Cr, Hg, Pb, Co, Ni, V, Tl in plowing layer soil and As, Cd, Cr, Hg, Pb, Se, Ge in agriculture products were quantitative analysis, the variation coefficients of Hg, Mo, Cd, As, I, Cu, Mn and Pb in the plowing layer soil of Yuqing County were all greater than 0.6, which was in good agreement with the characteristics of the enrichment coefficients of each index. Based on the regional geological background、climate and human activities, 10 main factors were extracted to analyze the cause of formation of surface soil geochemistry in Yuqing County cultivated land by using R-type factor analysis method,ten principal factors account for 83.494% of the characteristics of Yuqing County.The characteristics of element content in agricultural products depend on the geological background and the enrichment rate of elements in crops.The research results can lay an important foundation for agricultural production, land planning and dynamic monitoring of heavy metals in the region. |
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