测定叶片光谱反射率和微分光谱。
Spectral reflectance from leaves and the differential spectrum were measured.
用该种塑料叶片装配成贴膜塑料百叶窗，具有对光的反射率高，具有良好的装饰效果。
The plastic shutter which is assembled by the blades has high reflectivity to light and good decorative effect.
通过分析水稻叶片氮含量与冠层光谱反射率及植被指数之间的相关性和定量关系，测试并评价便携式作物氮素监测仪的工作性能。
The correlations and the quantitative relationships between LNC and rice canopy reflectance spectra were analyzed, and the performance of portable nitrogen monitoring instrument was evaluated.
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