In addition, the effect of nitrogen status on leaf SPAD was quantified by the value of leaf nitrogen concentration, and the relationship between SPAD and RGB was described with linear equation.

 
  • 并基于叶片氮含量表达了氮素供应水平对叶片SPAD值变化规律的影响,同时用线性方程描述了叶片SPAD值与RGB值之间的定量关系。
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