|本期目錄/Table of Contents|

[1]伍婵翠,劉傑,梁英,等.氮、磷、硫對鉻超富集植物李氏禾吸收Cr(Ⅵ)的影響[J].江蘇農業科學,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].,2019,47(14):316-320.
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氮、磷、硫對鉻超富集植物李氏禾吸收Cr(Ⅵ)的影響(PDF)
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《江蘇農業科學》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期數:
2019年第14期
頁碼:
316-320
欄目:
資源與環境
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 劉傑3 梁英2 蔣永榮2 張學洪2
1.廣西大學輕工與食品工程學院,廣西南甯 530004; 2.桂林電子科技大學生命與環境科學學院,廣西桂林 541004;
3.桂林理工大學/廣西環境汙染控制理論與技術重點實驗室,廣西桂林 541004
Author(s):
Wu Chancuiet al
關鍵詞:
超富集植物李氏禾植物修複效率
Keywords:
-
分類號:
X173
DOI:
-
文獻標志碼:
A
摘要:
通過水培試驗,以用25% Hoaglands營養液培養的植株作爲對照,研究無機營養元素氮、磷、硫對鉻超富集植物李氏禾吸收六價鉻[Cr(Ⅵ)]的影響。結果表明,李氏禾根系對Cr(Ⅵ)的吸收符合系Michaelis-Menten方程,其米氏常數(Km)爲91.84 μmol/L。與全素培養條件相比,在缺氮、缺硫條件下,李氏禾的根系吸收位點與Cr(Ⅵ)的親和力增加,根系分泌物能增加土壤中難溶性鉻的活性,從而有利于對Cr(Ⅵ)的吸收;而在缺磷培養條件下,根系分泌物不利于土壤中難溶性鉻的溶出,缺磷條件對李氏禾吸收Cr(Ⅵ)存在非競爭性抑制作用。由研究結果可知,適當施用磷肥有利于提高李氏禾對Cr(Ⅵ)汙染土壤的植物修複效率。
Abstract:
-

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備注/Memo

備注/Memo:
收稿日期:2018-04-15
基金項目:廣西科技重大專項(編號:桂科AA17204047);國家自然科學基金(編號:41471270)。
作者簡介:伍婵翠(1978—),女,廣西桂林人,博士研究生,講師,主要從事植物修複技術與資源化利用研究。Tel:(0773)2293135;E-mail:363401251@qq.com。
通信作者:張學洪,博士,教授,博士生導師,主要從事生態環境治理與修複研究。E-mail:zhangxuehong@x263.net。
更新日期/Last Update: 2019-07-20