摘要
以京津唐地区部分夏玉米品种为材料,在长期定位施肥土壤上研究不同玉米品种节氮潜力。结果表明:京单28在两个氮水平下的产量显著高于区试对照品种京玉7,具有33.7%的节氮潜力,在生产中可节省氮肥投入,同步实现高产与氮肥高效利用。
In this study, the N fertilizer-saving potential of different maize hybrids grown in Beijing-tianjin-tangshan area was estimated in the soil of long-term fertilization. The result indicated that in comparison with the check hybrid JY7, JD28 got much higher yield at both low and high N supplies. The potential for saving N fertilizer in JD28 was 33.7%, which meant huge amount of N fertilizer could be saved by using this hybrid, and should be helpful in determine the optimum N fertilizer input to realize efficient N utilization and higher yield simuhaneously.
出处
《玉米科学》
CAS
CSCD
北大核心
2009年第4期115-117,共3页
Journal of Maize Sciences
基金
国家重点基础研究规划项目(2007CB109302)
(2009CB118606)
国家自然科学基金(30600381)
关键词
夏玉米
氮肥
节氮潜力
Summer maize
Nitrogen fertilizer
N-saving potential
