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在夏玉米整个生育期的不同阶段 ,测定其叶片光谱反射率 ,并结合其生物物理参数的变化进行分析。结果表明 ,叶绿素浓度、叶面积指数等生物物理参数 ,可以反映作物生长发育的特征动态 ,也是反映物质生产和反射光谱关系的中间枢纽 ,通过叶绿素浓度含量与叶片反射率光谱和一阶导数光谱数据的相关分析 ,可以看出全生育期和不同生育期阶段的叶绿素敏感波段范围。
The spectral reflectance of leaves was measured at different stages of summer maize growth period and analyzed with the changes of its biophysical parameters. The results showed that the biophysical parameters such as chlorophyll concentration and leaf area index could reflect the characteristic dynamic of crop growth and development as well as the intermediate juncture reflecting the relationship between material production and reflectance. Through the relationship between chlorophyll concentration, leaf reflectance and first derivative data The correlation analysis shows the range of chlorophyll sensitive bands in the whole growth period and different growth stages.