| 孕穗期渍水逆境对冬小麦氮素营养及产量的影响 |
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| 作者姓名： | 魏凤珍 李金才 尹钧 王成雨 屈会娟 |
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| 作者单位： | 安徽农业大学农学院，安徽农业大学农学院，河南农业大学/国家小麦工程技术研究中心 河南郑州450002，河南农业大学/国家小麦工程技术研究中心，安徽农业大学农学院，河南农业大学/国家小麦工程技术研究中心，安徽合肥230036，安徽合肥230036，河南郑州450002，安徽合肥230036，河南郑州450002 |
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| 基金项目： | 国家粮食丰产科技工程项目“河南小麦夏玉米两熟丰产高效技术集成研究与示范”（2004BA520A）和河南省重大科技攻关项目“小麦丰产高效技术集成与示范”（0522010100）. |
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| 摘 要： | 采用池栽试验,研究了孕穗期渍水逆境对小麦氮素营养和产量的影响。研究结果表明:孕穗期渍水逆境显著影响小麦氮素的吸收量,降低茎鞘、功能叶片和全株含氮量和全氮积累量,而对氮素在地上不同器官的分配比例影响较小。由于渍水逆境影响了小麦根系正常吸收氮素,使叶片含氮量急剧下降,从而导致旗叶叶绿素含量和净光合速率降低,影响小麦功能叶片正常光合性能,最终使小麦粒重和产量下降。
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| 关 键 词： | 小麦 孕穗期 渍水逆境 氮素营养 产量 |
Effects of Waterlogging Stress on Nitrogen Nutrition and Yield in Winter Wheat at Booting Stage |
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| Authors: | Wei Fengzhen Li Jincai Yin Jun Wang Chengyu Qu Huijuan |
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| Institution: | 1.Anhui Agricultural University Agronomy Department, Hefei Anhui 230036; 2.Henan Agricultural University, National Engineer Research Center for Wheat, Zhengzhou Henan 450002 |
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| Abstract: | Experiments were carried out on the experiment farm of Anhui agricultural university with pool culture from 2004 to 2005. Effects of waterlogging at booting stage on N nutrition and yield were studied by applying simulation waterlogging method. The results showed that waterlogging at booting stage significantly influenced N nutrition Absorption content and reduced in dropping of total flag leaf chlorophyll content and net photosynthesis reducing and the grain weight and economic yield at last. |
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| Keywords: | Winter wheat (Tr aestivum) Booting stage waterlogging Nutrition Yield |
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