Extended Data Fig. 2: The rice CO2 fertilization effect (CFE) as a function of different potential drivers.

a, Variations of the difference in the corrected Akaike information criterion (ΔAICc) of the most competitive regression models for the impact of rice growing season average temperature (Tair), subspecies, phosphatic fertilizer (P), potash fertilizer (K), plant density (PD) and nitrogen fertilizer (N) on CFE. b, Relative importance of potential drivers regulating the effects of CO2 increase on rice yield.