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. 2016 May 24;7:699. doi: 10.3389/fpls.2016.00699

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Copyright © 2016 Mu, Chen, Chen, Yuan and Mi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effect of nitrogen (N) supply on the percentages of N_TH/specific leaf N (SLN), N_h/N_TH and N_b/N_TH of ear-leaf in maize. Bars denote the SE of the mean. ns, not significant (P > 0.05); ^∗P < 0.05, ^∗∗P < 0.01, ^∗∗∗P < 0.001, respectively. HN corresponds to a N application of 180 kg ha^-1; LN indicates that no N was applied.