| 不同水分条件下水稻对硒的吸收与转运 |
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| 引用本文： | 狄雪荣,管远清,丁永祯,张克强,戴礼洪,冯人伟,王瑞刚,李道贤. 不同水分条件下水稻对硒的吸收与转运[J]. 农业环境科学学报, 2019, 38(10): 2263-2269 |
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| 作者姓名： | 狄雪荣 管远清 丁永祯 张克强 戴礼洪 冯人伟 王瑞刚 李道贤 |
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| 作者单位： | 农业农村部环境保护科研监测所, 天津 300191;农业农村部产地环境污染防控重点实验室, 天津 300191,农业农村部环境保护科研监测所, 天津 300191,农业农村部环境保护科研监测所, 天津 300191;农业农村部产地环境污染防控重点实验室, 天津 300191,农业农村部环境保护科研监测所, 天津 300191,农业农村部环境保护科研监测所, 天津 300191,福建农林大学, 福州 350002,农业农村部环境保护科研监测所, 天津 300191;农业农村部产地环境污染防控重点实验室, 天津 300191,农业农村部环境保护科研监测所, 天津 300191 |
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| 基金项目： | 国家自然科学基金项目（41471274） |
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| 摘 要： | 为考察不同水分条件下施加不同形态和浓度的硒(Se)对水稻Se吸收与转运的影响,采用盆栽试验,研究了湿润灌溉和常规灌溉下,土施0、1.0、5.0 mg·kg~(-1)的Na_2SeO_3 [Se(Ⅳ)]和Na_2SeO_4 [Se(Ⅵ)]对水稻Se吸收与转运的影响。结果显示,施Se显著促进水稻生长,秸秆干质量和籽粒产量较CK增幅,湿润灌溉下分别为22.35%～39.76%和35.42%～61.94%,常规灌溉下分别为19.18%～57.23%和4.02%～55.37%。根、茎、叶和籽粒各部位Se含量随Se处理浓度的升高而显著升高。低、高浓度Se(Ⅳ)处理,在湿润灌溉下,根Se含量分别是CK的3.69倍和12.05倍,茎硒含量分别是CK的2.71倍和20.33倍,叶硒含量分别是CK的1.95倍和10.76倍,糙米硒含量分别是CK的6.94倍和29.72倍,精米硒含量分别是CK的6.86倍和31.61倍;在常规灌溉下,根硒含量分别是CK的2.12倍和5.56倍,茎硒含量分别是CK的2.51倍和11.70倍,叶硒含量分别是CK的2.97倍和10.94倍,糙米硒含量分别是CK的4.53倍和23.69倍,精米硒含量分别是CK的5.29倍和23.37倍。Se浓度、Se形态和水分条件对根、茎、叶、糙米Se含量存在显著的交互作用(P0.05)。根系Se含量在湿润灌溉下表现出Se(Ⅳ)处理显著高于Se(Ⅵ)处理;茎Se含量在高浓度Se处理下,湿润灌溉显著高于常规灌溉,Se(Ⅳ)处理显著高于Se(Ⅵ);籽粒在湿润灌溉下的Se含量显著高于同浓度下的常规灌溉处理。相对于常规灌溉,湿润灌溉显著增加水稻茎/根、糙米/茎、糙米/叶Se转运系数,增幅分别为40%～158.82%、44.23%～94.73%和6.78%～228.85%。研究表明,相比常规灌溉,湿润灌溉更有利于Se向籽粒转运。
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| 关 键 词： | 水稻 硒 水分管理 转运系数 |
| 收稿时间： | 2019-02-19 |
Effects of different water managements on the uptake and transport of selenium in rice exposed to different selenium species |
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| DI Xue-rong,GUAN Yuan-qing,DING Yong-zhen,ZHANG Ke-qiang,DAI Li-hong,FENG Ren-wei,WANG Rui-gang and LI Dao-xian. Effects of different water managements on the uptake and transport of selenium in rice exposed to different selenium species[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2019, 38(10): 2263-2269 |
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| Authors: | DI Xue-rong GUAN Yuan-qing DING Yong-zhen ZHANG Ke-qiang DAI Li-hong FENG Ren-wei WANG Rui-gang LI Dao-xian |
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| Affiliation: | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China;Key Laboratory of AgroEnvironmental Pollution Control and Prevention, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China;Key Laboratory of AgroEnvironmental Pollution Control and Prevention, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China,Fujian Agriculture and Forestry University, Fuzhou 350002, China,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China;Key Laboratory of AgroEnvironmental Pollution Control and Prevention, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China and Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China |
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| Abstract: | |
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| Keywords: | rice Se water management transfer coefficient |
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