| 郭天财,方保停,王晨阳,李鸿斐.水分调控对小麦旗叶叶绿素荧光动力学参数及其产量的影响[J].干旱地区农业研究,2005,(2):6~10 |
| 水分调控对小麦旗叶叶绿素荧光动力学参数及其产量的影响 |
| Effects of water regulations on the kinetic parameters of chlorophyll fluorescence in wheat flag leaves as well as wheat yield |
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| DOI：10.7606/j.issn.1000-7601.2005.02.02 |
| 中文关键词: 冬小麦 灌水 叶绿素荧光参数 产量 |
| 英文关键词:winter wheat irrigation chlorophyll fluorescence parameter yield |
| 基金项目:河南省重大科技攻关项目(122012300;0324100016)； 河南省自然科学基金(0411032600) |
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| 中文摘要: |
| 在小麦全生育期遮雨条件下,利用植物效能分析仪研究了不同灌水对小麦旗叶叶绿素荧光动力学参数日变化的影响。结果表明,Fo,Fm,Fv,Fv/Fm及Fv/Fo日变化均呈“V”字型,其中Fo以9∶00～11∶00最低;Fm,Fv,Fv/Fm及Fv/Fo以15∶00最低。不同灌水处理间,Fo以拔节期+抽穗期灌2水处理为最大;而Fm,Fv,Fv/Fm及Fv/Fo以拔节期+抽穗期+花后10d灌3水处理的为最大。表明小麦生育期间增加灌水可以改善旗叶叶绿素荧光动力学参数,提高籽粒产量。但随着灌水次数的增加,田间耗水量增加,水分利用效率明显下降。 |
| 英文摘要: |
| Aplant efficiency analyzer was used to study the effects of the irrigation at different rates on the kinetic parameters of chlorophyll fluorescence in wheat flagleaves with wheat shielding from rainfall during its growth．The results showed that Fo，Fv ，Fm，Fv ／Fm and Fv／Fo varied in a V-shape manner； Fo reached its lowest point between 9∶00 and 11∶00，and Fv，Fm，Fv／Fm and Fv／Fo reached their lowest points at 15∶00；the Fo in the treatment in which wheat was irrigated once at the jointing stage and once at the heading stage was the highest among the Fos in other irrigation treatments．Meantime，the highest Fv，Fm，Fv／Fm and Fv／Fo appeared in the treatments in which wheat was irrigated three times， once at the jointing stage，the heading stage and the flowering stage，respectively．These indicated that the increased irrigation during wheat growth could improve the kinetic parameters of chlorophyll fluorescence in wheat flagleaves，and then raise wheat yield．But as the number of irrigation increased，the field waters consumption increased and the water use efficiency remarkably declined． |
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