Canopy Spectral Reflectance Characteristics of Rice with Different Cultural Practices and Their Fuzzy Cluster Analysis |
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| Authors: | XUE Li-hong CAO Wei-xing Luo Wei-hong YANG Lin-zhang |
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| Affiliation: | 1.Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2.Key Laboratory of Crop Growth Regulation, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: | The influence of major cultural practices including different nitrogen application rates, population densities, transplanting leaf ages of seedling, and water regimes on rice canopy spectral reflectance was investigated. Results showed that increased nitrogen rates, water regimes and population densities and decreased seedling ages could enhance reflectance at NIR (near infrared) bands and reduce reflectance at visible bands. Using reflectance of green, red and NIR band and ratio index of 810-560 nm could distinguish the different type of rice by fuzzy cluster analysis. |
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| Keywords: | rice cultural practices canopy reflectance spectrum fuzzy cluster analysis |
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