Effects of Decreasing Nitrogen Inputs on Nitrate Nitrogen in Soil and Nitrogen Fertilizer Use Efficiency
WANG Cheng yu,SHI Yu hua,JING Yue bo
Chinese Journal of Agrometeorology . 2013, (06): 642 -647 .  DOI: 10.3969/j.issn.1000-6362.2013.06.004