秋玉米SPAD值的光谱估算模型研究

花宇辉,高志强

Hyperspectral Estimation of SPAD Values in Different Varieties of Autumn Maize

Yuhui Hua,Zhiqiang Gao

表2 不同秋玉米品种SPAD值预测模型及其决定系数

Table 2 Predictive model and coefficient of determination of SPAD value of different autumn maize varieties

品种 Variety 模型Model 一元线性模型 Linear model R2 指数模型 Exponential model R2 多项式模型 Polynomial model R2 双兴玉2号Shuangxingyu No.2 y=38660x+46.774 0.731 y=46.66e704.24x 0.737 y=-19533118x2+48050.806x+46.482 0.737 正大999 Zhengda 999 y=34262x+36.096 0.861 y=39.224e591.41x 0.860 y=14888708x2+15133.378x+41.232 0.886 湘农玉27号Xiangnongyu No.27 y=77172x+30.210 0.907 y=34.932e1336.9x 0.908 y=92891892x2+11627.991x+39.552 0.913 兴玉818 Xingyu 818 y=54077x+54.495 0.721 y=53.95e913.14x 0.710 y=-30808871x2+62332.558x+54.681 0.730 临奥1号B3 Lin′ao No.1 B3 y=38823x+49.368 0.800 y=49.831e634.56x 0.797 y=-4207729x2+41629.656x+49.108 0.801 湘农玉32号Xiangnongyu No.32 y=30562x+39.597 0.801 y=42.769e487.93x 0.853 y=16960342x2+4942.054x+47.636 0.843 洛玉1号Luoyu No.1 y=111055x+77.22 0.869 y=80.587e1984x 0.842 y=96303678x2+148021.766x+80.146 0.825 田玉335 Tianyu 335 y=33687x+34.605 0.883 y=38.05e580.92x 0.879 y=-12646105x2+52181.083x+29.068 0.888