| 滴灌冬小麦不同施氮量下光合-气孔导度耦合模拟和验证 |
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| 引用本文： | 张彦群,王建东,赵月芬,龚时宏,隋娟.滴灌冬小麦不同施氮量下光合-气孔导度耦合模拟和验证[J].农业工程学报,2018,34(10):124-130. |
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| 作者姓名： | 张彦群 王建东 赵月芬 龚时宏 隋娟 |
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| 作者单位： | 中国水利水电科学研究院水利研究所;中国水利水电科学研究院北京中水科工程总公司 |
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| 基金项目： | 国家"十二五"科技支撑计划课题（2014BAD12B05）;中国水科院创新团队项目（ID0145B602017) |
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| 摘 要： | 针对华北平原冬小麦田过量施氮(N)现象,构建和参数化不同施N量下光合-气孔导度耦合模型有利于理解降低施N量对作物产量影响的生理基础。该文于2013—2014年连续2个生长季在滴灌冬小麦田设置3种施N量:290、190和110 kg/hm2,开展了光合及相关生理因子的测定,确定了光合-气孔导度耦合模型关键参数。结果表明:最大羧化速率V_(cmax)在84.5~153.3μmol/(m2·s)之间变化,V_(cmax)与叶片N含量之间的可用线性关系来量化;最大电子传递速率J_(max)在156.5~236.2μmol/(m2·s)之间变化,二者比值在处理间差异不显著;推导光合模型和气孔导度Ball-Berry模型联立的解析解来求解耦合模型,能较好模拟光合速率日进程,对2次测定模拟的平均绝对误差分别为2.11和2.23μmol/(m2·s)。通过对环境因子及生理因子差异的综合分析,模型可用于模拟施N条件下的光合速率变化,从而为较准确地预测小麦产量奠定基础。
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| 关 键 词： | 作物 氮 光合作用 冬小麦 气孔导度 耦合模拟 |
| 收稿时间： | 2017/11/2 0:00:00 |
| 修稿时间： | 2018/3/5 0:00:00 |
Simulation and verification of photosynthesis-stomatal conductance coupled model under different nitrogen application rates in winter wheat with drip irrigation |
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| Zhang Yanqun,Wang Jiandong,Zhao Yuefen,Gong Shihong and Sui Juan.Simulation and verification of photosynthesis-stomatal conductance coupled model under different nitrogen application rates in winter wheat with drip irrigation[J].Transactions of the Chinese Society of Agricultural Engineering,2018,34(10):124-130. |
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| Authors: | Zhang Yanqun Wang Jiandong Zhao Yuefen Gong Shihong and Sui Juan |
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| Institution: | 1. Department of irrigation and drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China;,1. Department of irrigation and drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China;,2. Beijing IWHR Corporation, China Institute of Water Resources and Hydropower Research, Beijing 100048, China,1. Department of irrigation and drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China; and 1. Department of irrigation and drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China; |
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| Abstract: | |
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| Keywords: | crops nitrogen photosynthesis winter wheat stomatal conductance coupled model |
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