Effects of nitrogen topdressing period and number on nitrogen absorption of potato and nitrate residue in soil
WANG Xiangzhi, ZHANG Sheng, LI Xingxing, GAO Xiang, YUAN Zhiqiang, ZHANG Zhijun, DONG Pu
Journal of Northern Agriculture . 2019, (5): 40 -47 .  DOI: 10.3969/j.issn.2096-1197.2019.05.08