Improving resource use efficiency in rice-based cropping systems: experimentation and modelling

To cope with the projected increase in food demand and increased environmental concerns, rice-based cropping systems combining high resource use efficiencies and high yields will be increasingly important. By combining experimental research with crop growth simulation, this study aims at a better quantitative understanding of crop production and nitrogen dynamics in irrigated rice-wheat (RW) systems to improve N management as a basis for the design of RW systems that combine high yields with high N use efficiencies.

The various field experiments included different rice genotypes, environments, and N fertilizer and water management. Experimental data was used to evaluate the rice crop growth model ORYZA2000, which performed satisfactorily...