基于叶片反射光谱估测水稻氮营养指数

徐浩聪,姚波,王权,陈婷婷,朱铁忠,何海兵,柯健,尤翠翠,吴小文,郭爽爽,武立权

Determination of Suitable Band Width for Estimating Rice Nitrogen Nutrition Index Based on Leaf Reflectance Spectra

XU HaoCong,YAO Bo,WANG Quan,CHEN TingTing,ZHU TieZhong,HE HaiBing,KE Jian,YOU CuiCui,WU XiaoWen,GUO ShuangShuang,WU LiQuan

图5 两波段组合的归一化差值（ND）和比值（SR）光谱指数预测水稻氮营养指数的决定系数（R2）等势图

Fig. 5 Contour maps of determination coefficients (R2) between NNI and normalized difference (ND) and ratio (SR) spectral indices based on two wavebands-combination in rice