| 杨志忠,罗勇军,周文龙,宋小军,蒲庆隆.贵州省镇远县主要农产品地球化学调查评价分析[J].矿产勘查,2024,15(6):1103-1112 |
| 贵州省镇远县主要农产品地球化学调查评价分析 |
| Geochemical investigation and evaluation of main agricultural products in Zhenyuan County， Guizhou |
| 投稿时间：2023-04-07 修订日期：2023-07-18 |
| DOI：10.20008/j.kckc.202406021 |
| 中文关键词: 地球化学 硒 重金属元素 主要农产品 镇远县 |
| 英文关键词: geochemistry selenium heavy metal elements main agricultural products Zhenyuan County |
| 基金项目:本文受贵州省公益性地球化学调查项目“贵州省镇远县耕地质量地球化学调查评价”（2017-03-23）资助。 |
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| 中文摘要: |
| 贵州省镇远县富硒耕地资源丰富，调查评价该区农产品地球化学特征，对该区特色耕地资源开发利用、农产品产业布局优化、乡村振兴等有一定指导意义。本文通过对镇远县主要农作物玉米、水稻及特色农作物红桃、食用玫瑰进行农产品和相应根系土取样化验，并开展数据统计及相关分析研究。结果显示，水稻富硒率16.67%，红桃富硒率13.33%。部分玉米籽实样品Cd元素富集较高；Cd元素的高生物富集率和土壤中Cd元素生物易利用形态的高含量是造成玉米籽实Cd元素高富集的重要原因；减少氮肥施用、适当提高耕地土壤pH值，应会降低农产品对Cd元素的生物富集率；适当提高耕地土壤中硒含量，可提高农产品硒富集。 |
| 英文摘要: |
| Selenium-rich cultivated land resources are abundant in Zhenyuan County， Guizhou Province. The investigation and evaluation of the geochemical characteristics of agricultural products in this area have certain guiding significance for the development and utilization of characteristic cultivated land resources， optimization of agricultural product industrial layout and rural revitalization in this area. In this paper， the main crops of corn， rice and characteristic crops of red peach and edible rose in Zhenyuan County were sampled and analyzed， and data statistics and related analysis were carried out. The results showed that the selenium enrichment rate of rice was 16.67% and that of red peach was 13.33%. Cd element enrichment was higher in some corn seed samples. The high bioenrichment rate of Cd element and the high content of the bioavailable form of Cd element in soil were the important reasons for the high enrichment of Cd element in corn seeds. Reducing the application of nitrogen fertilizer and appropriately increasing the pH value of cultivated soil should reduce the biological enrichment rate of Cd element in agricultural products. The enrichment of selenium in agricultural products can be improved by appropriately increasing the content of selenium in cultivated soil. |
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