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Effect of long-term application of NPK fertilizer on maize yield and yellow soil nutrients sustainability in Guizhou, China
LIU Yan-ling, LI Yu, ZHANG Ya-rong, HUANG Xing-cheng, ZHANG Wen-an, JIANG Tai-ming
Chinese Journal of Applied Ecology . 2017, (11): 3581 -3588 .  DOI: 10.13287/j.1001-9332.201711.026