不同价态外源硒对小白菜生长及养分吸收的影响

被引：77

作者：

付冬冬

段曼莉

梁东丽

王松山

吴雄平

机构：

[1] 西北农林科技大学资源环境学院

来源：

植物营养与肥料学报 | 2011年 / 17卷 / 02期

关键词：

硒; 小白菜; 生长; 养分吸收;

D O I：

暂无

中图分类号：

S634.3 [白菜（小白菜）];

学科分类号：

090202 [蔬菜学];

摘要：

通过盆栽试验,研究了土壤外源加入两种不同价态的硒[Se(Ⅳ)和Se(Ⅵ)]对小白菜生长、营养元素和硒吸收的影响。结果表明,施硒对小白菜的生长均表现出低浓度(<5 mg/kg)促进,高浓度(>5 mg/kg)抑制的趋势。Se(Ⅵ)处理小白菜地上部硒含量大于地下部;而Se(Ⅳ)处理则相反。硒从根部转运到地上部的转移因子表现为Se(Ⅵ)处理大于Se(Ⅳ)处理。两种价态硒处理,小白菜对氮、磷、钾、硫、镁和锌的吸收也表现出低浓度时为促进,高浓度时为抑制的趋势。Se(Ⅵ)显著增加了钙的吸收,Se(Ⅳ)却无显著影响;Se(Ⅳ)和Se(Ⅵ)均能促进小白菜对铁的吸收。相同浓度下,Se(Ⅵ)对各种营养元素吸收的影响显著大于Se(Ⅳ)。综合硒对生长和养分吸收的影响看出,小白菜施硒量以Se(Ⅵ)不超过2.5 mg/kg或Se(Ⅳ)不超过5 mg/kg为宜。

引用

页码：358 / 365

页数：8

共 23 条

[1]

Differences in uptake and translocation of selenate and selenite by the weeping willow and hybrid willow [J].

Yu, Xiao-Zhang ;

Gu, Ji-Dong .

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2008, 15 (06) :499-508

[2]

Strategies for increasing the selenium content of wheat [J].

Hawkesford, Malcolm J. ;

Zhao, Fang-Jie .

JOURNAL OF CEREAL SCIENCE, 2007, 46 (03) :282-292

[3]

Plant availability of inorganic and organic selenium fertiliser as influenced by soil organic matter content and pH [J].

Eich-Greatorex, Susanne ;

Sogn, Trine A. ;

Ogaard, Anne Falk ;

Aasen, Ivar .

NUTRIENT CYCLING IN AGROECOSYSTEMS, 2007, 79 (03) :221-231

[4]

Brassica juncea can improve selenite and selenate abatement in selenium contaminated soils through the aid of its rhizospheric bacterial population.[J].Simona Gregorio;Silvia Lampis;Fernando Malorgio;Gianniantonio Petruzzelli;Beatrice Pezzarossa;Giovanni Vallini.Plant and Soil.2006, 1

[5]

Influence of selenium on oxidoreductive enzymes activity in soil and in plants [J].

Nowak, J ;

Kaklewski, K ;

Ligocki, M .

SOIL BIOLOGY & BIOCHEMISTRY, 2004, 36 (10) :1553-1558

[6]

Selenium source in the selenosis area of the Daba region; South Qinling Mountain; China.[J].Luo Kunli;Xu Lirong;Tan Jian'an;Wang Douhu;Xiang Lianhua.Environmental Geology.2003, 3

[7]

Determination of selenium species in environmental samples [J].