期刊论文

中文

农业现代化研究

1000-0275

2010

31

6

758-761

10.3969/j.issn.1000-0275.2010.06.028

国家“十一五”科技支撑计划项目（编号：2008BADA7B07） 湖南省林业厅重点项目（编号：62020608001）

本校为第一机构

为探明龙须草镉（Cd）耐受性及修复污染土壤的可能性,在盆栽试验条件下,研究了不同浓度Cd处理下植株生长特性及Cd累积特征。结果表明,Cd离子在低浓度（小于5mgCd/kg土）情况下,能促进龙须草的营养生长,株高、分蘖数、叶面积及干物质积累都有不同程度增加;高于5mgCd/kg土处理下则抑制植株生长;随Cd浓度增加,根系与茎叶中的Cd积累浓度和累积量明显升高,在Cd浓度达到100mgCd/kg土处理下龙须草仍能完成正常生长周期。表明龙须草在高Cd浓度下（大于5mgCd/kg土）虽生长受到一定限制,但能正常生长发育及积累更多Cd离子,耐重金属Cd能力较强,可作为修复Cd污染土壤的优势植物种植。

In order to investigate binata Cd tolerance and the possibility of remediation of contaminated soil, the changes of plant growth characteristics and Cd accumulation were studied under different concentrations treatment in the pot experiment conditions.The results showed that Cd ions at low concentrations （less than 5mg Cd/kg soil） conditions can promote binata nutrition growth, its plant height, tiller number, leaf area and dry matter accumulation increased in varying degrees; But it inhibited plant growth under higher than 5mg Cd/kg soil tre...