Analyses of wheat yield potential by AEZ model on the basis of Chinese farming system zonation

Wheat yield potentials in 41 Chinese farming system sub-zones were calculated on the bases of AEZ model developed by FAO and IIASA in accordance with verified statistical data (1961 to 1997)on China.The distribution of maximum wheat yield potential was extrapolated on Chinese GIS map.Results show that maximum yield potential of wheat can be 2～3 folds its present levels,an invaluable discovery for high wheat yield breeding and cultivation in China.