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. 2017 Dec 8;7:17226. doi: 10.1038/s41598-017-17491-y

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Effects of nitrogen applications on dry matter transportation. N90: total nitrogen application rate of 90 kg ha⁻¹; N180: total N application rate of 180 kg ha⁻¹; DMBH: dry matter production before heading; DMAH: dry matter production after heading; TDM: total dry matter accumulated; OFA: optimized nitrogen fertilizer application; TFA: traditional nitrogen fertilizer application.