| 王显炜,梅晓波,谢颖,王晖,陈恩科.陕西咸阳某地富硒土地资源的可开发性初探[J].矿产勘查,2018,9(9):1820-1826 |
| 陕西咸阳某地富硒土地资源的可开发性初探 |
| Discussion about the exploitation of selenium-rich soil resources somewhere of Xianyang |
| 投稿时间：2018-06-10 |
| DOI： |
| 中文关键词: 咸阳 硒 富硒土地 可开发性 |
| 英文关键词: exploitation, selenium, selenium-rich soil, Xianyang |
| 基金项目:咸阳城市地质调查(编号:20160302)资助。 |
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| 摘要点击次数: 1617 |
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| 中文摘要: |
| 富硒土壤的评价是富硒土壤资源开发利用的前提和基础,为评估富硒土壤的可开发性,在前期土地质量地球化学评价的基础上,采用指数法,以关中平原土壤富硒含量(硒含量≥0.2 mg/kg)为参比值,进行土壤的富硒程度及富硒农产品的安全性评价。结果表明:土壤中硒含量以0.30~0.40 mg/kg为主,约99.71%农用地块土壤硒含量符合可开发标准；土壤环境质量良好,清洁土壤约占农用地块总面积的98.50%,具备了开发富硒产品的基本环境条件；小麦样本富硒率达82.61%,重金属安全率达到95.65%,玉米样本富硒率达85.71%,重金属安全率达到100%,认为研究区具备开发利用富硒农产品的条件,可进行富硒土壤资源的开发。 |
| 英文摘要: |
| Assessment of soil with abundant selenium is precondition and foundation for exploitation and utilization of selenium- rich soil resources. In order to assess the exploitation of selenium -rich soil resources, based on the geochemical evaluation of land quality in the early stage, an index method is adopted to evaluate the extent of the selenium in the soil and safety assessment of selenium- rich agriculture products, by using the standard value of selenium-rich content(Se≥0.2 mg/kg)of the soil in Guanzhong Plain as the reference ratio. the evaluation of soil environmental geochemistry. The results indicate that the amount of selenium in soil of this area is moderate (0.30 ~ 0.40 mg/kg), about 99.71% agricultural land conforms to the standard of development. As the soil environment quality is good and the clean soil is almost 98.50% of the total area of the agricultural land. Therefore the basic environmental condition for the development of selenium- rich products is obtained:the selenium enrichment rate of wheat samples is 82.61% while their safety ratio of heavy metal is 95.65%; the selenium enrichment rate of corn samples is 82.61% which the safety ratio of heavy metal is 100%. It is considered that this survey area has the conditions for developing and utilizing the selenium-rich agricultural products, exploitation of the selenium- rich soil resources in the area can be conducted as well. |
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