This study was conducted to compare internal nitrogen (N) efficiency of super hybrid rice among different. tillage and crop establishment methods. Field experiments were done in Changsha, Hunan Province, China during 2004-09. Super hybrid rice Liangyoupeijiu was grown under a factorial combination of two tillage practices (conventional tillage and no-tillage) and two crop establishment methods (transplanting and direct seeding) in each year. Grain yield, total N accumulation in aboveground biomass, internal N efficiency and N distribution percentage in different plant organs (straw, filled and...
