HYPERSPECTRAL MONITORING BASED ON THE NET PHOTOSYNTHETIC RATE OF BROOMCORN MILLET UNDER VARYING PHOTOPERIODS. - LI, R.; CHANG, B.; CUI, X. Y.; DAI, C. Y.; TIAN, X.; CHEN, L.; QIAO, Z. J.; WANG, J. J. (Applied Ecology & Environmental Research, 2025)