| 磷与四价硒的共存对小白菜磷、硒吸收及转运的影响 |
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| 引用本文： | 赵文龙,胡斌,王嘉薇,肖然,梁东丽.磷与四价硒的共存对小白菜磷、硒吸收及转运的影响[J].环境科学学报,2013,33(7):2020-2026. |
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| 作者姓名： | 赵文龙 胡斌 王嘉薇 肖然 梁东丽 |
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| 作者单位： | 西北农林科技大学资源环境学院;农业部西北植物营养与农业环境重点实验室,杨凌712100 |
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| 基金项目： | 国家自然科学基金项目(No.41171379) |
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| 摘 要： | 采用土培盆栽试验和化学分析相结合的方法,研究了不同浓度磷酸盐与四价硒共存对小白菜生长、磷和硒吸收及转运的影响,旨在为安全有效地进行补硒和硒污染土壤的植物修复提供理论依据.结果表明,在供试硒浓度范围内(≤5.0 mg·kg-1),施磷均显著促进了小白菜的生长,表现为地上、地下部生物量的增大(p＜0.01).与单施磷相比,硒与磷共存能抑制小白菜根系生长,且抑制其对磷的吸收.磷对小白菜硒吸收的影响与硒、磷浓度有关,表现为促进作用和抑制作用并存,当硒浓度较高时(≥2.5 mg·kg-1),与无磷对照相比施磷可促进小白菜根系对硒的吸收；但高磷处理却导致小白菜地下部硒浓度较低磷处理显著下降.小白菜对磷酸盐的选择性吸收要强于亚硒酸盐,且高浓度磷能抑制硒由小白菜地下部向地上部的转运.故在进行补硒或硒污染土壤修复时,应特别注意合理施磷,以免过量施磷对作物硒吸收和转运的影响.
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| 关 键 词： | 磷酸盐 亚硒酸盐 生长 吸收 转运 |
| 收稿时间： | 2012/10/3 0:00:00 |
| 修稿时间： | 2012/12/28 0:00:00 |
Combined effects of phosphate and selenite on the uptake and translocation of phosphorus and selenium in pakchoi |
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| ZHAO Wenlong,HU Bin,WANG Jiawei,XIAO Ran and LIANG Dongli.Combined effects of phosphate and selenite on the uptake and translocation of phosphorus and selenium in pakchoi[J].Acta Scientiae Circumstantiae,2013,33(7):2020-2026. |
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| Authors: | ZHAO Wenlong HU Bin WANG Jiawei XIAO Ran and LIANG Dongli |
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| Institution: | College of Natural Resources and Environment, Northwest A & F University;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100;College of Natural Resources and Environment, Northwest A & F University;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100;College of Natural Resources and Environment, Northwest A & F University;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100;College of Natural Resources and Environment, Northwest A & F University;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100;College of Natural Resources and Environment, Northwest A & F University;Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100 |
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| Abstract: | |
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| Keywords: | phosphate selenite growth uptake translocation |
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