Based on the comprehensive observation of the surface layer and the agriculture ecosystem at Yangtdz Delta, we study the turbulence fluxes of CO2, sensible heat, latent heat and momentum at Changshu, Jiangsu Province during the transplanting, jointing and ears‐emerging of the rice growth stages for the rice field. The result shows that the rice field acts as a sink of CO2 for every growth stage. The rice absorbs CO2 during daytime but releases it during nighttime. The absorption amount of CO2 during the ears‐emerging stage is larger than that in the stages of transplanting and jointing. The surface layer is a heat source of atmosphere and the heating is mainly through latent heat release. The ratio of sensible heat flux to latent heat flux is only 0.06 during the ears‐emerging stage. Remarkable correlations exits between change of the turbulence fluxes of CO2 and the components of radiation balance, as well as different meteorological factors.