| 不同生育时期施氮对冬小麦氮素分配及叶片代谢的影响 |
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| 引用本文： | 岳寿松,于振文.不同生育时期施氮对冬小麦氮素分配及叶片代谢的影响[J].作物学报,1998,24(6):811-815. |
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| 作者姓名： | 岳寿松 于振文 |
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| 作者单位： | 山东省农业科学院，济南，250100 |
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| 基金项目： | 国家自然科学基金39670431项目资助 |
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| 摘 要： | 通过＾１５Ｎ示踪结合叶片代谢变化研究二棱期，雌雄蕊原基形成期和四分体期分别施氮对冬小麦籽粒产量和蛋白质含量的影响机理。结果表明：四分体形成期和雌雄蕊原基形成期施氮处理，收获期营养器官中＾１５Ｎ原子百分超显著降低，籽粒中＾１５Ｎ原子百分超明显增加，并提高了开花后叶片硝酸还原酶活性和叶片衰老后期的光合作用速率，显著增加了籽粒产量和籽粒蛋白质含量。
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| 关 键 词： | 冬小麦 氮素分配 氮素代谢 |
| 收稿时间： | 1996-08-26 |
| 修稿时间： | 1997-09-29 |
Effects of Nitrogen Applied at Different Growth Stages on Nitrogen Distribution and Leaf Metabolisms in Winter Wheat (Triticum aestivum L. ) |
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| Yue Shousong Yu Zhenwen Yu Songlie.Effects of Nitrogen Applied at Different Growth Stages on Nitrogen Distribution and Leaf Metabolisms in Winter Wheat (Triticum aestivum L. )[J].Acta Agronomica Sinica,1998,24(6):811-815. |
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| Authors: | Yue Shousong Yu Zhenwen Yu Songlie |
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| Institution: | Shandong Academy of Agricultural Science,Jinan,250100 |
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| Abstract: | The effect of nitrogen fertilizer ( (NH4)2SO4 375 kg hm-2) dressed at double
ridge, pistal-stamen primordium formation and tetrad formation stages respectively, on yield and
protein content of grains in winter wheat (cv Lu215953) was studied. The results showed that
appling nitrogen at pistal-stamen primordium formation stage and at tetrad formation stage
decreased 15N atom % in grains at harvest, raised photosynthetic rate and NR activity of flag
and second leaves, enhanced grain yield significantly and improved protein content of grains as
well. |
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| Keywords: | Winter wheat Nitrogen distribution Nitrogen metabolism |
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