耐性植物秸秆覆盖对荠菜生长及镉积累的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家农业科技成果转化资金项目"川花梨新品种中试与优质高产栽培技术应用及产业化示范"(2011GB2F000006)


Effects of Mulching with Cadmium Tolerant Plant Straws on Growth and Cadmium Accumulation of Capsella Bursa-pastoris in Cadmium Contaminated Soil
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    [目的] 研究秸秆覆盖对富集植物重金属积累的影响,筛选能促进荠菜生长和镉积累的镉耐性植物. [方法] 通过盆栽试验研究镉污染条件下,覆盖4种镉耐性植物(扬子毛茛、通泉草、邻近风轮菜和车前)秸秆对荠菜生长及镉积累的影响. [结果] 覆盖扬子毛茛、通泉草、邻近风轮菜和车前秸秆后,荠菜的地上部分生物量、总生物量和叶片叶绿素含量值均低于未覆盖处理.覆盖扬子毛茛、通泉草、邻近风轮菜和车前秸秆的荠菜总生物量则较未覆盖分别降低了34.04%,49.85%,40.27%和18.39%.只有覆盖邻近风轮菜秸秆提高了荠菜根系镉含量,而覆盖扬子毛茛和通泉草秸秆则提高了荠菜地上部分镉含量(较未覆盖分别提高了18.61%和12.87%).然而,覆盖4种耐性植物的荠菜根系、地上部分及整株镉积累量均低于未覆盖. [结论] 在盆栽条件下,覆盖镉耐性植物(扬子毛茛、通泉草、邻近风轮菜和车前)秸秆不能提高荠菜对镉污染土壤的修复能力.

    Abstract:

    [Objective] The objective of this paper is to study the effect of mulching with straws of four cadmium tolerant species on heavy metal accumulation of accumulator in order to select cadmium tolerant species which can promote the growth cadmium accumulation of Capsella bursa-pastoris. [Methods] A pot experiment was conducted to study the effects of mulching with straws of four cadmium tolerant species (Ranunculus sieboldii, Mazus japonicus, Clinopodium confine and Plantago asiatica) on growth and cadmium accumulation of Capsella bursa-pastoris in Cd-contaminated soil. [Results] The soil mulching with R. sieboldii, M. japonicus, C. confine and P. asiatica straws reduced the shoot biomass, total biomass and leaf SPAD value of C. bursa-pastoris compared with control. Compared with control, the soil mulching with R. sieboldii, M. japonicus, C. confine and P. asiatica straws reduced the whole biomass of C. bursa-pastoris by 37.61%, 52.14%, 43.76% and 21.71% respectively. Only C. confine straw increased the cadmium content in root of C. bursa-pastoris, and R. sieboldii and M. japonicus straws increased the cadmium content in shoot of C. bursa-pastoris by 18.61% and 12.87% respectively. The cadmium exactions in root, shoot and whole plant of C. bursa-pastoris decreased when mulched with four cadmium tolerant plant straws. [Conclusion] The soil mulching with four cadmium tolerant plant (Ranunculus sieboldii, Mazus japonicus, Clinopodium confine and Plantago asiatica) straws cannot enhance the ability of Capsella bursa-pastoris to remedy cadmium contaminated soil under pot experiment conditions.

    参考文献
    相似文献
    引证文献
引用本文

王恒,石军,林立金,杨代宇,黄科文,张潇.耐性植物秸秆覆盖对荠菜生长及镉积累的影响[J].水土保持通报,2016,36(1):184-187

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-10-23
  • 最后修改日期:2014-12-17
  • 录用日期:
  • 在线发布日期: 2016-04-15
  • 出版日期: