| 病害胁迫下棉花叶片色素含量高光谱遥感估测研究 |
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| 引用本文： | 陈兵,李少昆,王克如,王方永,肖春华,潘文超.病害胁迫下棉花叶片色素含量高光谱遥感估测研究[J].光谱学与光谱分析,2010,30(2). |
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| 作者姓名： | 陈兵 李少昆 王克如 王方永 肖春华 潘文超 |
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| 作者单位： | 1. 石河子大学新疆兵团绿洲生态农业重点开放实验室,石河子,新疆,832003;中国农业科学院作物科学研究所,北京,100081
2. 石河子大学新疆兵团绿洲生态农业重点开放实验室,石河子,新疆,832003 |
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| 基金项目： | (863计划)项目(2006AA10Z207,2006AA10A302);;兵团绿洲生态农业重点实验室开放课题项目(200804)资助 |
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| 摘 要： | 通过小区和大田同步调查棉花黄萎病,在不同生育期测定病叶光谱及其色素含量。将病叶光谱反射率、一阶微分及相应的特征参数与色素含量进行相关分析,建立病叶色素含量估测模型并检验。结果表明:病叶叶绿素a,b及a+b含量可见光反射率、与一阶微分光谱在蓝边、黄边和红边处与除红边振幅(Dr)外的其他光谱特征参数间均达极显著相关。转换叶绿素吸收反射指数(TCARI)和新建归一化植被指数(ND-VI702,758])对叶绿素a,b及a+b含量的估测精度最高,相对误差均小于1.3%。考虑到NDVI702,758]建立的模型更实用,可做为病叶叶绿素a,b和a+b含量的最佳估测模型。研究结果对高光谱信息定量估测病害棉叶色素含量,对利用高光谱监测棉花长势及病害影响评价均具有较高的实用价值。
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| 关 键 词： | 棉花 病害胁迫 高光谱 色素含量 估测模型 |
Study on Hyperspectral Estimation of Pigment Contents in Leaves of Cotton Under Disease Stress |
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| CHEN Bing,LI Shao-kun,WANG Ke-ru,WANG Fang-yong,XIAO Chun-hua,PAN Wen-chao.Study on Hyperspectral Estimation of Pigment Contents in Leaves of Cotton Under Disease Stress[J].Spectroscopy and Spectral Analysis,2010,30(2). |
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| Authors: | CHEN Bing LI Shao-kun WANG Ke-ru WANG Fang-yong XIAO Chun-hua PAN Wen-chao |
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| Institution: | CHEN Bing1,2,LI Shao-kun1,WANG Ke-ru1,WANG Fang-yong1,XIAO Chun-hua1,PAN Wen-chao11.Key Laboratory of Oasis Ecology Agriculture of Xinjiang Corps,Shihezi University,Shihezi 832003,China2.Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081,China |
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| Abstract: | The spectrum reflectance and pigment contents of cotton leaves infected with Verticillium wilt were measured in cotton disease nursery and field in different growth phases,and severity level of Verticillium wilt was investigated.The correlation between pigment contents of cotton leaves with Verticillium wilt and spectra reflectance,the first derivative of reflectance and spectral characteristic parameters were analyzed respectively.The estimation models about leaves pigment contents of disease cotton were e... |
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| Keywords: | Cotton Disease stress Hyperspectra Pigment contents Estimation models |
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