TY - GEN AU - Yang,Jian AU - Du,Lin AU - Gong,Wei AU - Shi,Shuo AU - Sun,Jia AU - Chen,Biwu TI - Analyzing the performance of the first-derivative fluorescence spectrum for estimating leaf nitrogen concentration SN - 1094-4087 PY - 2019///0517 KW - Crops, Agricultural KW - Nitrogen KW - analysis KW - Oryza KW - chemistry KW - Plant Leaves KW - Principal Component Analysis KW - Spectrometry, Fluorescence KW - methods KW - Spectrum Analysis N1 - Publication Type: Journal Article UR - https://doi.org/10.1364/OE.27.003978 ER -