LI Dan,ZHAO Jinghua,HONG Ming,et al.Study on Relationship Between Radiant Energy Interception and Leaf Area Index of Pear Canopy[J].Northern Horticulture,2015,39(17):8-11.[doi:10.11937/bfyy.201517003]
梨树冠层截获辐射能与叶面积指数关系的研究
- Title:
- Study on Relationship Between Radiant Energy Interception and Leaf Area Index of Pear Canopy
- 关键词:
- 沟灌; 梨树; 截获辐射能; 叶面积指数(LAI); HemiView
- 文献标志码:
- A
- 摘要:
- 以新疆阿克苏地区沟灌条件下的香梨为研究对象，使用HemiView数字植物冠层分析仪器，探讨梨树在不同生长时段，冠层截获的太阳辐射能、LAI的变化规律及其相互关系。结果表明：冠层截获的散射能、直射能、总辐射能随时间的变化幅度均不大，且差异性不显著；同一天，梨树冠层截获的总辐射能＞直射能＞散射能；随着梨树生育期的进行，LAI呈下降趋势；在整个试验阶段，晴天条件下，梨树冠层截获的散射能、直射能与LAI多呈显著性正相关，阴天条件下，各类型辐射能与LAI相关性均不显著。试验表明，截获散射能对LAI变化的影响最大，截获直射能对LAI的影响最小，截获总辐射能对LAI的作用关系不明显。
- Abstract:
- Taking the furrow irrigation pear trees at Aksu region in Xinjiang as the research object，the change laws of radiant energy interception and leaf area index at different growth stages,and their correlation were studied by HemiView canopy image analysis system under different growth period of pear.The results showed that the change of total radiant energy interception，direct radiant energy interception and scattered radiant energy interception were relatively stable，and the difference of them was not distinct.The order of radiant energy interception was total radiant energy interception＞direct radiant energy interception＞scattered radiant energy interception on the same day.LAI decreased during the pear growth period.Throughout the test period，radiant energy interception was mostly significant positive correlation with LAI under sunny conditions.But radiant energy interception had no significant correlation with LAI under overcast conditions.Scattered radiant energy interception had a great effect on LAI，nor did with direct radiant energy interception and LAI.There was no significant relationship between total radiant energy interception and LAI.
参考文献/References:
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备注/Memo
第一作者简介：李丹（1988-），女，河南开封人，硕士研究生，研究方向为灌溉节水。E-mail：aydans@163.com.责任作者：赵经华（1979-），男，新疆奇台人，副教授，硕士生导师，现主要从事节水灌溉技术等科研与教学工作。E-mail：zhaojinghua__xj@126.com.基金项目：新疆维吾尔自治区重大专项资助项目（201130103-1）；国家科技支撑计划资助项目（2011Bad29B05）；新疆水利科技资助项目（2013G03）；新疆水利水电工程重点学科基金资助项目(XJZDXK-2002-10-05)。