华北农学报2017，Vol.32Issue(3)：182-187,6.DOI:10.7668/hbnxb.2017.03.028
不同水肥管理方式对春玉米籽粒灌浆特性、氮素利用及产量的影响
Effects of Different Water and Fertilizer Management on Spring Maize Grain Filling Characteristics and Nitrogen Utilization and Yield
摘要
Abstract
The effects of the different models of water and fertilizer management on grain filling characteristics and nitrogen utilization of spring maize in Hilly Regions of Mount Yanshan in Inner Mongolia were studied.The Jingdan 128 as the maize variety and four patterns of water and fertilizer management:no nitrogen(N0),nitrogen with flooding according to the local practice (CK),application rate with drip irrigation under mulch according to the local practice (DI),nitrogen with the model of drip irrigation and fertilization under mulch(WF)we used.The results of successive two years experiment showed:the management of fertigation performed best in grain filling characteristics.It could extend filling stage about 4.4 days compared with CK and improved filling rate effectively with 19.5% compared with CK.Meanwhile,the grain yield had a significantly positive correlation with grain filling rate and filling time.As for nitrogen utilization, the order of (nitrogen use efficiency,partial factor productivity,agronomic efficiency and nitrogen physiological utilization) performance in treatments (WF,DI and CK) was:WF>DI>CK.The nitrogen use efficiency of WF reached 60.8% and increased 33.4 percentage points compared with CK.The yield order was WF>DI>CK>N0 and,WF increased 47.1% compared with CK.Comprehensive analysis,drip irrigation fertigation nitrogen (WF) model is suitable for application and promotion in the region.关键词
春玉米/水肥管理/灌浆特性/氮肥利用率/产量Key words
Spring maize/Water and fertilizer management/Filling characteristics/Nitrogen use efficiency(NRE)/Yield分类
农业科技引用本文复制引用
李晓龙,白云龙,闫东,林利龙,梁淑萍,郑海春..不同水肥管理方式对春玉米籽粒灌浆特性、氮素利用及产量的影响[J].华北农学报,2017,32(3):182-187,6.基金项目
农业部2015年农业技术试验示范 (种植业)项目 （种植业）
