Fate of labeled urea-15N as basal and topdressing applications in an irrigated wheat-maize rotation system in North China plain: II summer maize
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Xueping Wu | Xiaobin Wang | Quansheng Zhao | Xiaoming Zhang | C. Grant | S. Jia | D. Cai | Kuai Dai | Ding-yi Zhang | Z. Feng | Yanming Sun | Yunma Yang | Chunxiang Meng