中国农业大学学报2011，Vol.16Issue(3)：42-47,6.
水氮互作对水稻籽粒充实及产量的影响
Effects of water-nitrogen interaction on rice grain plumpness and yield
摘要
Abstract
A field experiment was conducted to investigate the effects of irrigation methods (irrigation at the 4th leafage from top, irrigation at the 2nd leaf-age from top, and wetting-drying alternation irrigation) and application of panicle fertilization (application at the 4th leaf-age from top, two equal application at the 4th and the 2nd leaf-age from top,and application at the 2nd leaf-age from top) and its combinations on rice grain filling, plumpness and yield related traits at ooting and grain-filling stages using Japonica rice variety Yujing 6 (large spike). The results showed that 1000-grain weight and grain plumpness increased gradually with delaying fertilizer application and increasing panicle fertilization under the certain amount of water and nitrogen. Application of panicle fertilization at the 2nd leaf-age from top increased the grain filling rate at late grain filling stage and shortened the time of superior grain filling. Wetting-drying alternation irrigation greatly increased the filling rate and improved the hysteretic nature of the grain filling of inferior grains. Wetting-drying alternation irrigation with the application of panicle fertilization at the 2nd leaf-age from top was the ideal management regime,which increased thousand kernel weight,grain plumpness and yield by greatly improving the mean grain filling rate and maximum grain filling rate of the secondary branch grain of inferior grains.关键词
水稻/灌溉方式/穗肥施用/产量/灌浆速率分类
农业科技引用本文复制引用
李俊周,李磊,孙传范,赵全志,杜彦修,张静,彭廷..水氮互作对水稻籽粒充实及产量的影响[J].中国农业大学学报,2011,16(3):42-47,6.基金项目
河南省科技创新人才支持计划项目(094200510003) （094200510003）
教育部新世纪优秀人才支持计划项目(NCET-08-0663) （NCET-08-0663）
河南省高校科技创新团队支持计划项目(2010IRTSTHN005) （2010IRTSTHN005）
