Effects of urea enhanced with different weathered coal-derived humic acid components on maize yield and fate of fertilizer nitrogen

ZHANG Shui-qin, YUAN Liang, LI Wei, LIN Zhi-an, LI Yan-ting, HU Shu-wen, ZHAO Bing-qiang

Journal of Integrative Agriculture . 2019, (3): 656 -666 . DOI: 10.1016/S2095-3119(18)61950-1