测定叶片光谱反射率和微分光谱。
Spectral reflectance from leaves and the differential spectrum were measured.
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.
根据大量观测数据建立了叶片含水量与吸收深度及吸收面积间的线性回归方程序，从而提出一种利用光谱反射率诊断小麦叶片水分状况的方法。
The linear regression model between the water content of the wheat leaves and the absorption depth or area of the spectrum were obtained on the basis o...
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