水稲の水上栽培による生育特性とカドミウムの濃縮 Growth Characteristics and Cadmium Accumulation of Rice by Floating Culture

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Rapid modernization is proceeding and water pollution by detergents, agricultural chemicals, heavy metals and other toxic chemicals is now on problem with magnification of human activities in China. In this paper, the effect of cadmium on rice growth, bioaccumulation of cadmium to each part of rice, removal rate of cadmium from water and safety of food were investigated. Rice was grown from young plant to harvesting stage in vinyl house and exposed to cadmium for 80 days.<br>The rice grew normally at the concentration range from 0.001 to 0.1mgCd·<i>l</i><sup>-1</sup>, however, the growth of rice was extremely inhibited at the concentration of 100mg Cd·<i>l</i><sup>-1</sup>. The Cd concentration of each part of rice was in the order of root>stem>leave>stalk>grain>brown rice. In the first 40 days of the treatment, the accumulation rate of each part of rice reached to 70-94% for the final accumulation at the harvesting time. It was found that the Cd concentration in water satisfying the safety standard is below 0.029mgCd·<i>l</i><sup>-1</sup>, when Cd concentration in brown rice is 0.4mgCd·kg<sup>-1</sup>.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment

    水環境学会誌 = Journal of Japan Society on Water Environment 24(7), 459-465, 2001-07-10

    Japan Society on Water Environment

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各種コード

  • NII論文ID(NAID)
    10008005246
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    5839466
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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