• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >The threshold effect between the soil bioavailable molar Se:Cd ratio and the accumulation of Cd in corn (Zea mays L.) from natural Se-Cd rich soils
【24h】

The threshold effect between the soil bioavailable molar Se:Cd ratio and the accumulation of Cd in corn (Zea mays L.) from natural Se-Cd rich soils

机译：富硒天然土壤中玉米生物富硒摩尔比：硒与镉的阈值效应与玉米中镉的积累

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

There is little available information about the important interactions between selenium and cadmium (Se-Cd) in crops grown on natural Se-Cd rich soils. We investigated their interactive effects on the translocation and uptake of Se and Cd from soils to crops. Corn (Zea mays L.) roots, stems, leaves, and grains, and their corresponding rhizosphere soils were collected from naturally Se-Cd rich areas in Wumeng Mountain, Guizhou, China. The Se and Cd levels were determined in the soils, roots, stems, leaves, and grains. Soil bioavailable Se and Cd were also determined. The low soil bioavailable molar ratios for Se and Cd (Se:Cd) (<= 0.7) improved Cd accumulation in the plants. However, relatively high Se:Cd molar ratios (>0.7) in the soils prevented Cd from entering the plants. but the effect of the soil Se:Cd on Se accumulation in corn was not significant. The strong anion exchange-high performance liquid chromatography-inductively coupled plasma mass spectroscopy (SAX-HPLC-ICP-MS) chromatograms showed that Se-Cd complexes occurred in the leaves, which likely indicated that direct interactions between Se and Cd happened there. The results suggested that thresholds for soil bioavailable Se:Cd molar ratios played a role in the interaction between Se and Cd in corn under natural conditions. (C) 2019 Elsevier B.V. All rights reserved.
机译：在富硒自然土壤中生长的农作物中，硒和镉（Se-Cd）之间的重要相互作用的可用信息很少。我们研究了它们对土壤和农作物中硒和镉的转运和吸收的交互作用。玉米（Zea mays L.）的根，茎，叶和谷粒以及相应的根际土壤均来自中国贵州乌蒙山富硒硒自然地区。测定土壤，根，茎，叶和谷物中的硒和镉含量。还确定了土壤生物利用度的硒和镉。硒和镉的低土壤生物利用摩尔比（Se：Cd）（<= 0.7）改善了植物中Cd的积累。但是，土壤中相对较高的Se：Cd摩尔比（> 0.7）阻止了Cd进入植物。但土壤硒化镉对玉米中硒的积累影响不显着。强阴离子交换-高效液相色谱-电感耦合等离子体质谱（SAX-HPLC-ICP-MS）色谱图表明，Se-Cd络合物出现在叶片中，这可能表明Se和Cd之间直接发生了相互作用。结果表明，在自然条件下，土壤生物利用硒：镉摩尔比的阈值在玉米中硒和镉之间的相互作用中起作用。 （C）2019 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号