文献类型： 外文期刊
作者： Guo, Jiameng 1 ; Wang, Yonghong 2 ; Fan, Tinglu 3 ; Chen, Xinping 1 ; Cui, Zhenling 1 ;
作者机构： 1.China Agr Univ, Ctr Resources Environm & Food Secur, Beijing 100193, Peoples R China
2.Ningxia Agr Acad, Inst Crop, Ningxia 750000, Peoples R China
3.Gansu Acad Agr Sci, Dryland Agr Inst, Lanzhou 730000, Gansu, Peoples R China
期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）
ISSN： 0002-1962
年卷期： 2016 年 108 卷 2 期
页码：
收录情况： SCI
摘要： The challenge of increasing crop productivity and nitrogen use efficiency (NUE) has led to a search for novel pathways leading to more sustainable agriculture. Here, we designed a whole-corn (Zea mays L.) production system based on the local environment, drawing on appropriate crop varieties, sowing dates, densities, and advanced N management on the Loess Plateau in the Northwest of China. A 4 site-years field experiment was performed to examine this corn system based on grain yield, biomass, N application rate, and NUE. Grain yield with designed crop management varied from 16.1 to 19.1 Mg ha(-1) for these 4 site-years, which attained 98 to 108% of the yield potential (ranging from 15.519.3 Mg ha(-1)). Equally importantly, the optimal N rate ranged from 207 to 222 kg N ha(-1) with a high over ratio of 65 to 80 kg grain per kg applied N. Designing an integrated crop management system and N practice is an alternative approach for maximizing the use of solar radiation and periods with favorable temperature, ultimately achieving high yield and high NUE.
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