植物氮素含量与可见光和近红外光反射系数的比具有很好的相关性，因此利用光谱反射系数可以测定植物氮素含量，为合理的施用养分提供依据。
The ratio of the reflectance in visible and NIR is highly correlated with nitrogen applied to the plant. The nitrogen contents in the plant can be obtained by measuring spectrum reflectance.
植物氮素含量与可见光和近红外光反射系数的比具有很好的相关性，因此利用光谱反射系数可以测定植物氮素含量，为合理的施用养分提供依据。
The ratio of the reflectance in visible and NIR is highly correlated with nitrogen applied to the plant. The nitrogen contents in the plant can be obtained by measuring spectrum reflectance.
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