| 不同灌溉量对草坪草光合作用的影响 |
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| 引用本文： | 王英宇,杨建,韩烈保.不同灌溉量对草坪草光合作用的影响[J].北京林业大学学报,2006(Z1). |
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| 作者姓名： | 王英宇 杨建 韩烈保 |
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| 作者单位： | 北京市京石园林绿化有限公司 北京林业大学草坪研究所 |
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| 基金项目： | “863”国家高新技术项目(2002AA2Z4281)，教育部“新世纪优秀人才”支持计划项目. |
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| 摘 要： | 2004年7月和9月在北京林业大学草坪研究所试验基地,对不同灌溉量下草地早熟禾、高羊茅、结缕草分别进行光合观测,分析3种草坪草净光合速率、蒸腾速率、水分利用效率、气孔导度、光补偿点和光饱和点的变化趋势.研究结果表明:3种草的净光合速率随灌溉量的增加而增大;3种草的蒸腾速率和气孔导度随灌溉量的增加而增大,并且两者呈显著正相关;光响应曲线的斜率也是随灌溉量的增加而增大;结缕草的水分利用效率和光饱和点显著高于高羊茅和草地早熟禾,且光补偿点最低.
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| 关 键 词： | 灌溉量 草坪 光合作用 蒸腾速率 水分利用效率 气孔导度 |
Effects of different irrigation volume on photosynthesis of turfgrass. |
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| WANG Ying-yu,YANG Jian,HAN Lie-bao.Effects of different irrigation volume on photosynthesis of turfgrass.[J].Journal of Beijing Forestry University,2006(Z1). |
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| Authors: | WANG Ying-yu YANG Jian HAN Lie-bao |
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| Institution: | WANG Ying-yu~1,YANG Jian~2,HAN Lie-bao~2. 1 Beijing Jingshi Landscape CO. LTD,102600,P.R.China, 2 Institute of Turfgrass Science,Beijing Forestry University,100083,P.R.China. |
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| Abstract: | The photosynthesis of Kentucky bluegrass (Poa pratensis) , tall fescue (Festuca arundinacea) and zoysia grass (Zoysia japonica) under different irrigation volume was monitored from July to September in 2004 at the Turfgrass Station of Beijing Forestry University, and the changing tendency of the three kinds of turfgrass on NPR,ET,WUE,Cs,LSP and LCP were analysed. Results showed that the NPR, ET and Cs of the three kinds of turfgrass were gone up with the increase of irrigation volume. Moreover, the ET and Cs were positive related significantly. With the increase of irrigation volume, the slope of light-photosynthesis curve of the three kinds of turfgrass were increased. As far as LCP, LSP and WUE, results showed that LCP and WUE of zoysia grass were higher than that of tall fescue and Kentucky bluegrass significantly. However, LSP of zoysia grass was the lowest. |
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| Keywords: | irrigation volume turfgrass photosynthesis ET WUE Cs |
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