| 烤烟冠层光谱参数与叶片叶绿素含量的相关分析 |
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| 引用本文： | 王建伟,薛超群,周汉平,张艳玲,梁太波,张仕祥,魏春阳.烤烟冠层光谱参数与叶片叶绿素含量的相关分析[J].生态学杂志,2010,29(5):876. |
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| 作者姓名： | 王建伟 薛超群 周汉平 张艳玲 梁太波 张仕祥 魏春阳 |
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| 作者单位： | 中国烟草总公司郑州烟草研究院,郑州,450001 |
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| 基金项目： | 中国烟草总公司郑州烟草研究院院长基金资助项目(112008CA0380) |
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| 摘 要： | 为了明确烤烟冠层光谱参数与叶片叶绿素含量的相关性,测定了不同氮肥施用量条件下烤烟冠层光谱特征和烤烟鲜烟叶片叶绿素a(Chl-a)、叶绿素b(Chl-b)、类胡萝卜素(Cars)含量,并对光谱参数与叶绿素含量进行了相关分析和回归分析。结果表明:随着氮肥施用量增加,团棵期和旺长期鲜烟叶片的Chl-a、Chl-b和Cars含量均增加,可见光波段反射率降低、近红外波段反射率增加;而打顶期叶片的3种色素含量和光谱特征的变化规律不明显。可见光460～670nm范围内,460nm反射率与叶片叶绿素含量呈显著正相关,其他波段反射率与叶片叶绿素的含量呈显著负相关;近红外780～1260nm范围内,所有波段与叶片叶绿素含量的都呈显著正相关,1480nm反射率与叶片叶绿素含量呈显著负相关。反映Chl-a、Chl-b、Cars含量与光谱参数——比值植被指数(ratio vegetation index,RVI)定量关系的最佳回归方程分别为幂函数、幂函数和指数函数:Chl-a=0.250RVI(730,550)1.511,Chl-b=0.049RVI(730,550)1.841,Cars=0.0998e0.379RVI(730,550)。
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| 关 键 词： | 烤烟 植被指数 叶绿素 |
Correlations between canopy reflectance spectrum parameters and leaf chlorophyll content of flue-cured tobacco(Nicotiana tabacum L.) |
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| WANG Jian-wei,XUE Chao-qun,ZHOU Han-ping,ZHANG Yan-ling,LIANG Tai-bo,ZHANG Shi-xiang,WEI Chun-yang.Correlations between canopy reflectance spectrum parameters and leaf chlorophyll content of flue-cured tobacco(Nicotiana tabacum L.)[J].Chinese Journal of Ecology,2010,29(5):876. |
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| Authors: | WANG Jian-wei XUE Chao-qun ZHOU Han-ping ZHANG Yan-ling LIANG Tai-bo ZHANG Shi-xiang WEI Chun-yang |
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| Affiliation: | WANG Jian-wei,XUE Chao-qun,ZHOU Han-ping,ZHANG Yan-ling,LIANG Tai-bo,ZHANG Shi-xiang,WEI Chun-yang (Zhengzhou Tobacco Research Institute of CNTC,Zhengzhou 450001,China). |
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| Abstract: | To determine the correlativity between canopy reflectance parameters and leaf chlorophyll content of flue-cured tobacco, this paper measured the canopy reflectance spectrum and the contents of leaf chlorophyll a (Chl-a), chlorophyll b (Chl-b), and carotenoid (Cars) under different N application rate, and analyzed the correlations between the spectrum parameters and the chlorophyll contents. With the increase of N application rate, the contents of fresh leaf Chl-a, Chl-b, and Cars at spherical plant stage an... |
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| Keywords: | flue-cured tobacco (Nicotiana tabacum L ) vegetation index chlorophyll |
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