作物研究2017，Vol.31Issue(4)：377-383,7.DOI:10.16848/j.cnki.issn.1001-5280.2017.04.08
施氮量对超级杂交稻粒叶比及产量的影响
Effect of Nitrogen Application Rate on Grain-Leaf Ratio and Yield of Super Hybrid Rice
摘要
Abstract
The super hybrid rice varieties Liangyou Peiju,Y Liangyou 1,Y Liangyou 2,Y Liangyou 900 and Chaoyou 1000 were used as materials to study the effects of the nitrogen application rate on the grain-leaf ratio and yield of super hybrid rice at the Guidong ecological area.The results showed that the Y Liangyou 900 had the highest theoretical yield,and the Chaoyou 1000 had the highest actual yield.The maximum leaf area index of Y Liangyou 2 at 210 kg/hm2 nitrogen application rate was significantly lower than those of at 300 kg/hm2 and 390 kg/hm2,the other varieties showed no significant differences among different nitrogen treatments.The grain-leaf ratios of all the varieties showed no significant differences at nitrogen treatments more than 210 kg/hm2.Y Liangyou 900 and Chaoyou 1000 were superior other varieties obviously.The effective panicle number and seed setting rate of the five super hybrid rice Varieties decreased gradually,but the grain number per panicle significantly increased,and there was no significant differences between the yield and yield structure at each nitrogen treatment.The super hybrid rice showed sufficient source and sink capacity,improving seed setting rate and 1000-grain weight are important ways to further realize the yield potential.关键词
超级杂交稻/栽培/施氮量/粒叶比/产量Key words
super hybrid rice/cultivation/nitrogen application rate/grain-leaf ratio/yield分类
农业科技引用本文复制引用
曾贤恩,魏中伟,马国辉..施氮量对超级杂交稻粒叶比及产量的影响[J].作物研究,2017,31(4):377-383,7.基金项目
国家自然科学基金(31271659) （31271659）
国家科技支撑计划(2013BAD07B14,2012BAD04B10) （2013BAD07B14,2012BAD04B10）
公益性行业(农业)科研专项(201303109,201203059) （农业）
湖南省重大专项(2015NK1001) （2015NK1001）
湖南农业科技创新项目(2016QN03). （2016QN03）
