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4 水稻NNI与不同叶位叶片光谱反射率的相关性 L1：顶1叶;L2：顶2叶;L3：顶3叶;L12：顶1、2叶均值;L23：顶2、3叶均值;L13：顶1、3叶均值;L123：顶1、2、3叶均值

Fig. 4 Correlation between NNI and leaf spectral reflectance of different position leaves of rice plants L1: The top leaf; L2: The second leaf; L3: The third leaf; L12: The averaged spectra of L1 and L2; L23: The averaged spectra of L2 and L3; L13: The averaged spectra of L1 and L3; L123: The averaged spectra of L1, L2 and L3