Fig. 3: Optimum density and yield from RF model and in comparison with farmers’ practices and two other methods.
From: China can be self-sufficient in maize production by 2030 with optimal crop management
Spatial distribution of famers’ planting density (a), OPD (b), density gap (c), current yields (d), yield at OPD (e), and yield gap (f). Farmers’ planting density is derived from Ming et al. Current yield is collected from the public dataset22. Density gap is equaled to OPD minus farmers’ densities. Yield gap is defined in an analogous manner. Comparison of maize density (g) and yield (h) under different methods. Source data are provided as a Source Data file.
