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. 2019 Feb 22;10:181. doi: 10.3389/fpls.2019.00181

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Copyright © 2019 Ma, Liu, Li, Zhang, Wang, Lu, Wang, Xie, Ma and Kang.

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) and the copyright owner(s) 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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The relationships between SNA in the 0–100 cm soil layer (A) and apparent N loss (B) with N application rates across all experimental years and planting sites.