扬州大学学报（农业与生命科学版）2012，Vol.33Issue(1)：66-71,6.
氮肥水平对冬大麦产量、品质和氮肥利用效率的影响及其相关分析
Effect of nitrogen application rate on yield, quality and fertilizer-nitrogen use efficiency and its correlation analysis in winter barley
摘要
Abstract
Four winter barley cultivars,named Yangsimai 3, Ygangpi 1, Yangnongpi 2 and Frankin,were used to study the yield, quality and fertilizer-nitrogen use efficiency under different nitrogen application rate and correlation between them was analyzed. The results showed that the yield, effective spikes, grain number per spike, nitrogen accumulation in aboveground and grain protein content were in positive responses to the increase of N rate. 1 000-grain-weight and fertilizer-nitrogen use efficiency decreased when more N fertilizer applied. On different nitrogen application rate, the yield was correlated with 1 000-grain-weight, grain protein content and partial factor productivity of applied N. The nitrogen accumulation in aboveground was significantly and negatively correlated with N grain production efficiency (NGPE) (P< 0.01), N physiological efficiency(NPE) and partial factor productivity of applied N(PFP). 1 000-grain-weight was significantly negative correlated with grain protein content. NGPE was significantly and positively correlated with NPE (P< 0.01), and N agronomic efficiency(NAE) was significantly and positively correlated with PFP (P<0. 05), which was significantly and positively correlated with NPE (P<0. 05).关键词
大麦/产量/品质/氮肥利用效率Key words
barley/ yield/ quality/ fertilizer-nitrogen use efficiency分类
农业科技引用本文复制引用
徐寿军,刘志萍,张凤英,杨恒山,许如根,庄恒扬..氮肥水平对冬大麦产量、品质和氮肥利用效率的影响及其相关分析[J].扬州大学学报（农业与生命科学版）,2012,33(1):66-71,6.基金项目
国家高技术研究发展计划项目[863-2001AA245041、2003(138)] （138）
农业部农业科技成果转化项目(2060302) （2060302）
内蒙古民族大学创新团队建设计划项目(NMD1003) （NMD1003）
