| 杂交中稻在不同地域和施氮水平下氮素吸收利用效率的变异(英文) |
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| 引用本文： | 徐富贤,熊洪,张林,郭晓艺,朱永川,周兴兵,刘茂.杂交中稻在不同地域和施氮水平下氮素吸收利用效率的变异(英文)[J].Agricultural Science&Technology,2011(7). |
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| 作者姓名： | 徐富贤 熊洪 张林 郭晓艺 朱永川 周兴兵 刘茂 |
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| 作者单位： | 四川省农业科学院水稻高粱研究所; |
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| 基金项目： | Supported by Construction of Southwestern Rice Innovation System,Science and Technology Project on Food Production (2006BAD02-A05); Agriculture Science Technology Achievement TransformationFund (2006GB2F000256); Sichuan Provincial Foundation for Lead-ers of Disciplines in Science; Project of Rice Breeding Technology ofSichuan; Program Promoted by Sichuan Financial Administration~~ |
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| 摘 要： | 目的]为了探明氮素在植株中的积累与分配状况及氮素吸收利用率与试验点的地理位置、土壤化学特性、施氮量的关系。方法]2009年以杂交中稻Ⅱ优7号和渝香优203为材料,在西南稻区4省(市)的7个生态点采用相同的试验方案。结果]稻谷产量在地点间、品种间、施氮量间、地点与品种互作效应、地点与施氮量互作效应均达极显著水平,而品种与施氮量间的互作不显著;成熟期地上部干物重、含氮率和氮肥吸收利用效率分别在试验点、品种间和施氮量间的差异达极显著水平。氮素吸收率与利用率呈极显著负相关;氮素吸收利用率与试验点所处地理位置、施肥水平及土化特性呈极显著线性关系,F值9.34** ~914.30**,决定系数高达0.705 2 ~0.999 8。结论]施氮量越高,氮肥的利用效率越低;土化特性对氮吸收利用率的影响因品种和具体的氮利用率指标而异,氮稻谷生产率与土壤有机质含量呈极显著正相关,经度、海拔越高,氮肥利用效率越高。
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| 关 键 词： | 杂交中稻 地理位置 土化特性 施氮量 氮吸收利用效率 |
Variation of Nitrogen Uptake and Utilization Efficiency of Mid-Season Hybrid Rice at Different Ecological Sites under Different Nitrogen Application Levels |
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| XU Fu-xian,XIONG Hong,ZHANG Lin,GUO Xiao-yi,ZHU Yong-chuan,ZHOU Xing-bin,LIU Mao Rice , Sorghum Institute,Sichuan Academy of Agricultural Sciences,Luzhou.Variation of Nitrogen Uptake and Utilization Efficiency of Mid-Season Hybrid Rice at Different Ecological Sites under Different Nitrogen Application Levels[J].农业科学与技术(英文版),2011(7). |
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| Authors: | XU Fu-xian XIONG Hong ZHANG Lin GUO Xiao-yi ZHU Yong-chuan ZHOU Xing-bin LIU Mao Rice Sorghum Institute Sichuan Academy of Agricultural Sciences Luzhou |
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| Institution: | XU Fu-xian*,XIONG Hong,ZHANG Lin,GUO Xiao-yi,ZHU Yong-chuan,ZHOU Xing-bin,LIU Mao Rice and Sorghum Institute,Sichuan Academy of Agricultural Sciences,Luzhou 646000 |
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| Abstract: | Objective] The study aimed at investigating the effects of different geographic sites,soil chemical characteristics and nitrogen application levels on nitrogen accumulation and distribution in different organs and utilization efficiency for mid-season hybrid rice.Method] By using mid-season rice varieties II-you 7 and Yuxiangyou203 as the experimental materials,field experiment was conducted at seven ecological sites in four provinces or cities in Southwestern China in 2009.A total of four nitrogen applic... |
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| Keywords: | Mid-season hybrid rice Ecological site Soil chemical characteristics Nitrogen application level Nitrogen uptake and utilization efficiency |
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