| 行株距比对超高产晚稻产量和上部三叶的影响 |
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| 引用本文： | 林洪鑫,袁展汽,彭春瑞,肖运萍,刘仁根,汪瑞清.行株距比对超高产晚稻产量和上部三叶的影响[J].中国稻米,2014(3):17-22. |
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| 作者姓名： | 林洪鑫 袁展汽 彭春瑞 肖运萍 刘仁根 汪瑞清 |
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| 作者单位： | 江西省农业科学院土壤肥料与资源环境研究所/农业部长江中下游作物生理生态与耕作重点实验室／国家红壤改良工程技术研究中心,南昌330200 |
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| 基金项目： | 国家科技支撑计划（2012BAD15B03）;江西省农科院青年创新基金（2010-CQN004） |
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| 摘 要： | 2011和2012年,采用再裂区设计,以超高产晚稻淦鑫688和五丰优T025为材料,在31.20万丛/hm2密度下,研究了行/株距比对不同品种产量和上部三叶形态特征的影响及两者的关系。结果表明,淦鑫688不施氮时,RS/IS(行株距比值)为2.0和2.8的处理产量显著高于比值为5.0和1.3的处理;在施氮时,RS/IS为5.0和2.0的处理产量显著高于2.8和1.3的处理。五丰优T025不施氮时的产量表现为RS/IS为1.3的处理显著高于5.0和2.8的处理;而在施氮时表现为RS/IS为5.0的处理显著高于2.0和1.3的处理。施氮时,RS/IS为2.0的处理提高了氮素积累总量和氮肥表观利用率,而RS/IS为5.0的处理降低了籽粒需氮量;不论施氮与否,两个品种在RS/IS为2.0时,倒1至倒3叶的基角、开张角和叶长较小。
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| 关 键 词： | 水稻 超高产 行/株距比 施氮量 上部三叶 产量 |
Effects of Row Spacing Ratio on Yields and Top Three Leaves of Super High-Yielding Late Rice |
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| LIN Hong-xin,YUAN Zhan-qi,PENG Chun-rui,XIAO Yun-ping,LIU Ren-gen,WANG Rui-qing.Effects of Row Spacing Ratio on Yields and Top Three Leaves of Super High-Yielding Late Rice[J].China Rice,2014(3):17-22. |
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| Authors: | LIN Hong-xin YUAN Zhan-qi PENG Chun-rui XIAO Yun-ping LIU Ren-gen WANG Rui-qing |
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| Institution: | (Soil and Fertilizer ＆ Resources and Environment Institute, Jiangxi Academy of Agricultural Sciences / Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture / National Engineering and Technology Research Center for Red Soil Improvement, Nanchang 330200, China) |
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| Abstract: | In 2011 and 2012, a split-plot design experiment was carried on the effects of row spacing ratio （RS/IS） on yield and top three leaves of super high-yielding late rice Wufengyou T025 and Ganxin 688 in the same planting density of 31.20×10^4 hille/hm^2. The results indicated that the yield of RS/IS 2.0 and RS/IS 2.8 of Ganxin 688 were significant higher than that of RS/IS 5.0 and RS/IS 1.3 in no nitrogen condition, while the yield of RS/IS 5.0 and RS/IS 2.0 were significant higher than that of RS/IS 2.8 and RS/IS 1.3 in nitrogen condition. The yield of RS/IS 1.3 of Wufengyou T025 were significant higher than that of RS/IS 5.0 and RS/IS 2.8 in no nitrogen condition, while the yield of RS/IS 5.0 were significant higher than that of RS/IS 2.0 and RS/IS 1.3 in nitrogen condition. In nitrogen condition, RS/IS 5.0 and RS/IS 2.0 improved total amount of nitrogen accumulation and apparent nitrogen utilization, and RS/ IS 5.0 decreased nitrogen demand of grain. Whether nitrogen application or not, the basic angle, stretch angle and leaf length of top three leaves of two rice cultivar in RS/IS 2.0 were small. |
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| Keywords: | rice super high yield row spacing ratio nitrogen rate top three leaves yield |
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