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首页> 外文期刊>Plant and Soil >Arsenic Uptake and Accumulation in Rice (Oryza sativa L.) at Different Growth Stages following Soil Incorporation of Roxarsone and Arsanilic Acid
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Arsenic Uptake and Accumulation in Rice (Oryza sativa L.) at Different Growth Stages following Soil Incorporation of Roxarsone and Arsanilic Acid

机译：土壤中掺入罗沙松和砷酸后不同生长阶段水稻（Oryza sativa L.）的砷吸收和积累

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摘要

Experiments were conducted with rice (Oryza sativa L.) by adding 0, 10, 20, 30, 40, 50 mg kg-1 of arsenic (As) to soil (with roxarsone and arsanilic acid, presented as As concentrations) at a field with an isolation chamber. The aims were to evaluate the effects of As- (roxarsone or arsanilic acid) contaminated soil on rice agronomic parameters and uptake of As in different plant parts of the rice plant. The results showed that As (roxarsone or arsanilic acid) could significantly reduce plant height, effective tiller number, straw weight and grain yield (P < 0.01). As concentrations in different parts of the plant varied with the growth stages, and behaved similarly. At the maturing stage, the level in different parts peaked in all treatments, with tissue As concentrations showing the pattern: root > leaf > stem > husk > grain. In addition, at the mature stage, the As concentrations in different parts of the rice plant increased with increasing concentrations of roxarsone and arsanilic acid. The highest concentration of As found in grain was 0.82 mg kg-1, which did not exceed the statutory permissible limit for rice grain (1.0 mg As kg-1), and in the leaf and stem it was approximately 6.0 mg kg-1, which was significantly higher than that in the controls. The results showed that rice could accumulate As from contaminated soil (roxarsone or arsanilic acid), which may be transferred to human beings via the food chain.
机译：对水稻（Oryza sativa L.）进行了试验，向土壤中添加了0、10、20、30、40、50 mg kg-1的砷（As）（含洛沙酮和砷酸，以As的浓度表示） ）在带有隔离室的现场。目的是评估受As-（洛克沙酮或砷酸）污染的土壤对水稻农艺参数和水稻不同植物部位As吸收的影响。结果表明，As（洛克沙酮或砷酸）可以显着降低株高，有效分till数，秸秆重量和籽粒产量（P <0.01）。随着植物不同部位的浓度随生长期变化，其行为也相似。在成熟阶段，所有处理中不同部位的水平达到峰值，组织中的As浓度显示出以下模式：根>叶>茎>皮>谷粒。此外，在成熟阶段，水稻中不同部位的砷浓度随着罗沙酮和砷酸的浓度增加而增加。谷物中As的最高浓度为0.82 mg kg-1 ，未超过稻米及其叶片和茎中的法定允许限量（1.0 mg As kg-1 ）。约为6.0 mg kg-1 ，明显高于对照组。结果表明，水稻可能从受污染的土壤（洛克沙酮或砷酸）中积累砷，并可能通过食物链转移给人类。

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  • 来源
    《Plant and Soil》 |2006年第2期|359-367|共9页
  • 作者

    Fu-Min Wang; Zhang-Liu Chen; Lu Zhang; Yan-Ling Gao; Yong-Xue Sun;

  • 作者单位

    College of Veterinary Medicine South China Agricultural University;

    College of Veterinary Medicine South China Agricultural University;

    College of Forestry South China Agricultural University;

    College of Veterinary Medicine South China Agricultural University;

    College of Veterinary Medicine South China Agricultural University;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Arsenic; Arsanilic acid and roxarsone; Rice; Soil;

    机译：砷;砷酸和洛克沙酮;米;土壤;

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