Monitoring Models of the Plant Nitrogen Content Based on Cotton Canopy Hyperspectral Reflectance

文献类型： 外文期刊

第一作者： Wang Ke-ru

作者： Wang Ke-ru;Pan Wen-chao;Li Shao-kun;Wang Ke-ru;Pan Wen-chao;Li Shao-kun;Chen Bing;Xiao Hua;Wang Fang-yong;Chen Jiang-lu

作者机构：

关键词： Cotton;Canopy;High spectral;Nitrogen-sensitive band;Monitoring

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2011 年 31 卷 7 期

页码：

收录情况： SCI

摘要： Cotton production for accurate non-destructive, rapid monitoring of plant nitrogen content there is an urgent demand. Canopy spectral characteristics of the cotton plant and its quantitative relationship between nitrogen content, can achieve non-destructive monitoring of cotton nitrogen. Two consecutive years by different nitrogen test, cotton canopy hyperspectral data collection and simultaneous determination of canopy nitrogen content, analysis of different fertilizer treatments of cotton canopy spectral characteristics and the relationship between nitrogen content of cotton, the results show that: nitrogen content of cotton plant in different periods and spectral reflectance in the visible band (400 similar to 700 nm) was negatively related to the near-infrared 700 similar to 1 300 nm band was a significant positive correlation, and in the short-wave infrared 1 300 similar to 1 800 nm band correlation is more complicated. Canopy scale, the whole growth stage of cotton, the visible band are sensitive to nitrogen content in cotton band, and near-infrared only is the cotton boll nitrogen content of the sensitive band; short-wave infrared band only in the budding period Cotton nitrogen sensitive band. Using nitrogen-sensitive bands in different periods can be constructed Cotton Cotton Nitrogen monitoring indicators.

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