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Foliar δ 13C and Nitrogen Use Efficient of Populus deltoides and the Different Growth Vigor F1 Hybrid Clones
Gao Ming, Huang Qinjun, Ding Changjun, Su Xiaohua
Scientia Silvae Sinicae . 2013, (8): 51 -57 .  DOI: 10.11707/j.1001-7488.20130808