Fig. 6: Framework of the procedure for mapping regional optimum plant density (OPD) and yield at OPD (YieldOPD).
From: China can be self-sufficient in maize production by 2030 with optimal crop management
Tmax: daily maximum temperature. Tmin: daily minimum temperature. GDD: growing degree days (10–30 °C). SOM: soil organic matter. Tmax and Tmin is averaged during maize growing season, and solar radiation, precipitation, and GDD is the sum of growing season.
