Figure 1.
Leaf spectra of five cultivars with two different leaf nitrogen concentrations (25 g kg−1 and 30 g kg−1). The spectra in visible and near infrared regions of Kotobuki Shinsui and Cuiguan differed with different leaf nitrogen concentrations. In addition, the spectra in near infrared regions of Huangguan differed with different leaf nitrogen concentrations. However, the leaf spectra in all regions of Yali and Yuanhuang were not apparently differed from different leaf nitrogen concentrations.