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Nitrogen Nutrition Index of Cotton: Estimation Based on Leaf SPAD
Ha Faduman, Ma Lulu, Yin Caixia, Su Wei, Li Dongmei, Ding Yiren, Lv Xin, Zhang Ze
Chinese Agricultural Science Bulletin . 2021, (18): 31 -37 .  DOI: 10.11924/j.issn.1000-6850.casb2020-0499