To explore the effects of transplanting densities (37.0 × 10^4, 22. 2×10^4 hill/hm^2) and nitrogen application rates (0, 120, 165 and 210 kg/hm^2) on dry matter production, yield and its components of super late rice, field experimenrs were conducted with Tianyouhuazhan as material in Changsha anti Chenzhou in 2008. The results showed that dry matter accumulation and grain yield of super rice was increased by nitrogen application under two transplanting densities, while no significant difference existed among nitrogen application treatmen...