Response of grain yield to plant density and nitrogen rate in spring maize hybrids released from 1970 to 2010 in Northeast China
Chunrong Qian, Yang Yu, Xiujie Gong, Yubo Jiang, Yang Zhao, Zhongliang Yang, Yubo Hao, Liang Li, Zhenwei Song, Weijian Zhang
Response of grain yield to plant density and nitrogen rate in spring maize hybrids released from 1970 to 2010 in Northeast China
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