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Study on Inversion Model of Chlorophyll Content in Soybean Leaf Based on Optimal Spectral Indices

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光谱指数与SPAD值相关矩阵图 (a): RI与SPAD; (b): FDRI与SPAD; (c): DI与SPAD; (d): FDDI与SPAD; (e): NDVI与SPAD; (f): FDNDVI与SPAD;(g): mSR与SPAD; (h): FDmSR与SPAD; (i): mNDI与SPAD; (j): FD mNDI与SPAD; (k): SAVI与SPAD;(l): FDSAVI与SPAD; (m): TVI与SPAD; (n): FDTVI与SPAD