Effects of tillage and nitrogen addition rate on nitrogen metabolism, grain yield and protein content in wheat in lime concretion black soil region
XIONG Shu-Ping, WANG Jing, WANG Xiao-Chun, DING Shi-Jie, MA Xin-Ming
Chin J Plant Ecol . 2014, (7): 767 -775 .  DOI: 10.3724/SP.J.1258.2014.00072

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