highly significantP <0.05
The interactive effects of elevated [CO 2 ] and irrigation were highly significant in leaf area ( P <0.05; Table 4 ) and aboveground biomass ( P <0.05; Table 4 ).
The interactive effects of elevated [CO 2 ] and irrigation were highly significant in leaf area ( P <0.05; Table 4 ) and aboveground biomass ( P <0.05; Table 4 ).