Effects of Nitrogen Fertilizer on Yield and Enzyme Efficiency of Leaves in Spring Maize
NIU Qiaolong, CAO Gaoyi, DU Jin, SU Dongwei, WAN Peng, TIAN Xiuping
ACTA AGRICULTURAE BOREALI-SINICA . 2017, (1): 187 -192 .  DOI: 10.7668/hbnxb.2017.01.028