基于冠层光谱的早籼稻籽粒粗蛋白含量估测

田容才, 高志强, 卢俊玮

Estimation of Crude Protein Content in Grain of Early Indica Rice Based on Canopy Spectrum

Tian Rongcai, Gao Zhiqiang, Lu Junwei

表3 基于光谱参数的早籼稻籽粒粗蛋白含量估测

Table 3 The estimation of grain crude protein content of early indica rice based on spectral parameters

光谱参数Parameter 模型Model 回归方程Regression equation R2 RMSE (%) RE (%) NDSI(R′638,R′695) 线性Linear y=15.3x-8.556 0.356 0.416 3.535 指数Exponential y=1.408e1.616x 0.362 0.416 3.544 多项式Polynomial y=44.553x2-90.223x+53.9 0.359 0.415 3.584 DSI(R′514,R′638) 线性Linear y=-3205.643x+6.101 0.544 0.368 3.059 指数Exponential y=6.626e-338.051x 0.550 0.354 3.151 多项式Polynomial y=-10340000x2-26457.474x-6.826 0.638 0.312 2.639 RSI(R′638,R′695) 线性Linear y=0.242x+12.494 0.342 0.421 3.491 指数Exponential y=13.013e0.026x 0.348 0.422 3.585 多项式Polynomial y=0.036x2+1.135x+17.92 0.358 0.415 3.572