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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Nitrogen (N) content in root, sheath and leaf organs in different stage of NPB and YD6. N content in root of NPB (A) and YD6 (D); N content in sheath of NPB (B) and YD6 (E); N content in leaf of NPB (C) and YD6 (F).