|本期目录/Table of Contents|

[1]伍婵翠,刘杰,梁英,等.氮、磷、硫对铬超富集植物李氏禾吸收Cr(Ⅵ)的影响[J].江苏农业科学,2019,47(14):316-320.
 Wu Chancui,et al.Effects of nitrogen,phosphorus and sulfur on chromium(Ⅵ) uptake by hyperaccumulator Leersia hexandra Swartz[J].Jiangsu Agricultural Sciences,2019,47(14):316-320.
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氮、磷、硫对铬超富集植物李氏禾吸收Cr(Ⅵ)的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第14期
页码:
316-320
栏目:
资源与环境
出版日期:
2019-08-10

文章信息/Info

Title:
Effects of nitrogen,phosphorus and sulfur on chromium(Ⅵ) uptake by hyperaccumulator Leersia hexandra Swartz
作者:
伍婵翠12 刘杰3 梁英2 蒋永荣2 张学洪2
1.广西大学轻工与食品工程学院,广西南宁 530004; 2.桂林电子科技大学生命与环境科学学院,广西桂林 541004;
3.桂林理工大学/广西环境污染控制理论与技术重点实验室,广西桂林 541004
Author(s):
Wu Chancuiet al
关键词:
超富集植物李氏禾植物修复效率
Keywords:
-
分类号:
X173
DOI:
-
文献标志码:
A
摘要:
通过水培试验,以用25% Hoaglands营养液培养的植株作为对照,研究无机营养元素氮、磷、硫对铬超富集植物李氏禾吸收六价铬[Cr(Ⅵ)]的影响。结果表明,李氏禾根系对Cr(Ⅵ)的吸收符合系Michaelis-Menten方程,其米氏常数(Km)为91.84 μmol/L。与全素培养条件相比,在缺氮、缺硫条件下,李氏禾的根系吸收位点与Cr(Ⅵ)的亲和力增加,根系分泌物能增加土壤中难溶性铬的活性,从而有利于对Cr(Ⅵ)的吸收;而在缺磷培养条件下,根系分泌物不利于土壤中难溶性铬的溶出,缺磷条件对李氏禾吸收Cr(Ⅵ)存在非竞争性抑制作用。由研究结果可知,适当施用磷肥有利于提高李氏禾对Cr(Ⅵ)污染土壤的植物修复效率。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2018-04-15
基金项目:广西科技重大专项(编号:桂科AA17204047);国家自然科学基金(编号:41471270)。
作者简介:伍婵翠(1978—),女,广西桂林人,博士研究生,讲师,主要从事植物修复技术与资源化利用研究。Tel:(0773)2293135;E-mail:363401251@qq.com。
通信作者:张学洪,博士,教授,博士生导师,主要从事生态环境治理与修复研究。E-mail:zhangxuehong@x263.net。
更新日期/Last Update: 2019-07-20