| 不同氮肥施用对杂交稻产量及其氮素利用效率的影响 |
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| 引用本文： | 邹应斌,敖和军,夏冰,唐启源,彭少兵,Roland J Buresh. 不同氮肥施用对杂交稻产量及其氮素利用效率的影响[J]. 作物研究, 2008, 22(4) |
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| 作者姓名： | 邹应斌 敖和军 夏冰 唐启源 彭少兵 Roland J Buresh |
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| 作者单位： | 1. 湖南农业大学农学院,长沙,410128
2. 国际水稻研究所生理、水分与土壤科学系,马尼拉,DAPO Box,7777 |
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| 基金项目： | 农业部超级稻配套栽培技术开发与技术集成项目，湖南省超级稻三定栽培技术研究项目 |
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| 摘 要： | 为了探讨氮肥施用量和施用方法对杂交稻产量和氮素利用效率的影响，2001～2003年在湖南省宁乡县回龙铺镇进行了大田栽培试验。结果表明：改进施氮处理的氮肥用量为100～120kg／hm^2，比农民习惯施肥减少38．9％～47．6%，产量增加0．48～1．48t／hm^2，增幅6．32％～27．3％，减氮增产的效果显著；获得最高产量的适宜氮肥用量为99～147．5kg／hm^2，成熟期氮素吸收量为146．9～194．3kg／hm^2。改进的施氮处理AEN平均为10．6～14．3kg／kg．比农民习惯施肥增加7．0～10．7kg／kg；PFPN平均为65．2～96．8kg／kg，比农民的习惯施肥增加34．1～65．7kg／kg；REN平均为68．5％～76．2％，比农民习惯施肥增加14．1％～21．8％，增幅均达到显著或极显著水平。分析了氮肥用量对植株干物质在茎秆、叶片和稻穗分配的影响，讨论了植株后期对氮素的奢侈吸收而导致减产的可能性。
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| 关 键 词： | 水稻 旋肥 氮肥 农学利用率 |
Effects of Different Nitrogen Application on the Yield and Nitrogen Use Efficiency in Hybrid Rice |
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| ZOU Ying-bin,AO He-jun,XIA Bing,TANG Qi-yuan,PENG Shao-bing,Roland J Buresh. Effects of Different Nitrogen Application on the Yield and Nitrogen Use Efficiency in Hybrid Rice[J]. Crop Research, 2008, 22(4) |
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| Authors: | ZOU Ying-bin AO He-jun XIA Bing TANG Qi-yuan PENG Shao-bing Roland J Buresh |
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| Affiliation: | ZOU Ying-bin1,AO He-jun1,XIA Bing1,TANG Qi-yuan1,PENG Shao-bing2,ROLANG J Buresh2(1 College of Agronomy,Hunan Agricultural University,Changsha,Hunan,410128,China,2 Physiology,Soil ,Water Sciences Division of International Rice Research Institute,DAPO Box 7777,Metro Manila,Philippines) |
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| Abstract: | In order to explore the effects of nitrogen(N) rate and application methods on the yield and N use efficiency in hybrid rice,the field cultivation experiment was conducted in Huilongpu Town,Ningxiang County,Hunan Province in 2001~2003.The results showed that the N rate of modified N treatment(MNT) was 100~120 kg/hm2 which was reduced by 38.9%~47.6% compared with farmers' practice.The yield of MNT was increased 0.48~1.48 t/hm2 and by 6.32%~27.3% compared with farmers' practice.The effect of MNT on increase i... |
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| Keywords: | Rice Fertilization Nitrogen fertilizer Agronomy efficiency |
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