安徽农业科学2009，Vol.37Issue(22)：10441-10442,10453,3.
增施氮肥对寒地水稻产量性状的影响
Effects of Increasing N Application on Yield Traits of Rice in Cold Area
摘要
Abstract
[Objective] The aim was to study the effects of N application amount on yield traits of rice in cold area. [Method] With Longjing 14, Longjing 18, Longjing 20 as the materials, the effects of N application amount (150, 165, 180 and 195 kg/hm2) on their yield traits under 2 planting densities(18, 20 points/m2) were studied. [Result] Increasing N application amount could improve the effective panicle number of 3 varieties. Under 2 planting densities, the effective panicle number of Longjing 20 was the most, and those of Longjing 14 and 18 had little difference. Rice yield in all N treatments under 20 points /m2 were all higher than those under 18 points /m2. When N application amount was 165 kg/hm2, the yields of Longjing 14 and 18 were the highest, and that of Longjing 20 was the highest when N application amount was180 kg/hm2. The white rice yield of Longjing 14 and Longjing 18 had no obvious relationship with fertilization amount. But the white rice yield of Longjing 20 was slightly increased with the increment of N application amount. [Conclusion] When N application amount was 165-180 kg/hm2, the optimum planting densities of 3 varieties were 20 points/m2.关键词
氮肥/移栽密度/产量Key words
N fertilizer/Planting density/Yield分类
农业科技引用本文复制引用
王翠,赵海新,徐希德,黄晓群,马文东,王立楠..增施氮肥对寒地水稻产量性状的影响[J].安徽农业科学,2009,37(22):10441-10442,10453,3.基金项目
黑龙江科技厅项目(GB06B104-1-5). （GB06B104-1-5）
