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首页> 外文期刊>Chemosphere >Seeking for an optimal strategy to avoid arsenic and cadmium over-accumulation in crops: Soil management vs cultivar selection in a case study with maize
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Seeking for an optimal strategy to avoid arsenic and cadmium over-accumulation in crops: Soil management vs cultivar selection in a case study with maize

机译：寻求最佳的策略，以避免砷和镉在作物中积累：土壤管理与玉米案例研究中的品种选择

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摘要

Soil management and cultivar selection are two strategies to reduce the accumulation risk of heavy metals in crops. However, it is still an open question which of these two strategies is more efficient for the safe utilization of contaminated soil. In this study, the available bio-concentration factors (aBCF) of arsenic (As) and cadmium (Cd) among 39 maize cultivars were determined through a field experiment. The effect of soil management was mimicked by choosing diverse sampling sites having different soil available contents of As and Cd. The aBCF of As and Cd in grain ranged from 0.02 to 0.13 and 1.17 to 42.2, respectively. The accumulation ability of As and Cd was classified among different maize cultivars. Soil pH and total As controlled the level of available As in soils, while soil pH dominated available Cd in soil. A soil pH of 6.5 was recommended to simultaneously minimize soil available As and Cd by managing soil conditions. The quantitative effects of cultivar and soil management on grain As and Cd were expressed as Q [Grain As] -0.746Q [Cultivar]-0.126Q [pH]+0.276Q [As-available] (R-2 - 0.648, P = 1.00 x 10(-37)) and Q [Grain Cd] - 0.913Q [Cultivar]-0.192Q [pH]+0.071Q [SOC] (R-2 -0.782, P=1.00 x 10(-37)), respectively. Cultivar selection contributed stronger than soil management to decrease the As and Cd levels in maize grains. A feasible method to seek for a more efficient strategy was proposed for the safe utilization of contaminated soil. (C) 2021 Elsevier Ltd. All rights reserved.
机译：土壤管理和品种选择是减少作物中重金属积累风险的两种策略。然而，这仍然是一个开放问题，这两种策略中的哪一个更有效地用于安全利用污染的土壤。在本研究中，通过现场实验确定了39种玉米品种中砷（AS）和镉（CD）的可用生物浓度因子（ABCF）。通过选择具有与CD的不同土壤含量的不同土壤含量的不同的采样点来模仿土壤管理的影响。 AS和CD中的ABCF分别为0.02至0.13和1.17至42.2。 AS和Cd的累积能力在不同的玉米品种中进行了分类。土壤pH和对土壤中可用水平的土壤pH，而土壤pH在土壤中的可用CD。建议使用6.5的土壤pH值，以通过管理土壤条件同时最小化可用土壤和CD的土壤。品种和土壤管理对谷物和Cd的定量效果表示为Q [谷物] -0.746Q [品种] -0.126Q [pH] + 0.276Q [可用]（R-2 - 0.648，P = 1.00 x 10（-37））和q [谷物cd] - 0.913q [栽培品种] -0.192Q [pH] + 0.071Q [SOC]（R-2 -0.782，P = 1.00 x 10（-37）），分别。品种选择贡献比土壤管理更强，以减少玉米谷物中的AS和Cd水平。提出了一种寻求更有效的策略的可行方法，以安全利用污染的土壤。 （c）2021 elestvier有限公司保留所有权利。

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  • 来源
    《Chemosphere》 |2021年第6期|129891.1-129891.8|共8页
  • 作者

    Cao Xiaoxia; Gao Xin; Zeng Xibai; Ma Yibing; Gao Yue; Baeyens Willy; Jia Yuehui; Liu Jie; Wu Cuixia; Su Shiming;

  • 作者单位

    Chinese Acad Agr Sci Inst Environm & Sustainable Dev Agr Minist Agr Key Lab Agroenvironm Beijing 100081 Peoples R China;

    Chinese Acad Agr Sci Inst Environm & Sustainable Dev Agr Minist Agr Key Lab Agroenvironm Beijing 100081 Peoples R China;

    Chinese Acad Agr Sci Inst Environm & Sustainable Dev Agr Minist Agr Key Lab Agroenvironm Beijing 100081 Peoples R China;

    Macau Univ Sci & Technol Macau Environm Res Inst Macau 999078 Peoples R China;

    Vrije Univ Brussel Analyt Environm & GeoChem AMGC Pl Laan 2 B-1050 Brussels Belgium;

    Vrije Univ Brussel Analyt Environm & GeoChem AMGC Pl Laan 2 B-1050 Brussels Belgium;

    Beijing Univ Agr Coll Plant Sci & Technol Beijing 102206 Peoples R China;

    Beijing Univ Agr Coll Plant Sci & Technol Beijing 102206 Peoples R China;

    Chinese Acad Agr Sci Inst Environm & Sustainable Dev Agr Minist Agr Key Lab Agroenvironm Beijing 100081 Peoples R China;

    Chinese Acad Agr Sci Inst Environm & Sustainable Dev Agr Minist Agr Key Lab Agroenvironm Beijing 100081 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Maize; aBCF; Low-accumulation ability; Available as/Cd; Category regression;

    机译：玉米;ABCF;低积聚能力;可用AS / CD;类别回归;

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