Crop yield and water use efficiency(WUE)in a wheat-maize double cropping system are influenced by short and unevenrainfalls in the North China Plain(NCP).A 2-year experiment was conducted to investigate the effects of irrigation on soilwater balance,crop yield and WUE to improve irrigation use efficiency in the cropping system.Soil water depletion(△SWS)by crop generally decreased with the increase of irrigation and rainfall,while △SWS for the whole as

Crop yield and water use efficiency(WUE)in a wheat-maize double cropping system are influenced by short and unevenrainfalls in the North China Plain(NCP).A 2-year experiment was conducted to investigate the effects of irrigation on soilwater balance,crop yield and WUE to improve irrigation use efficiency in the cropping system.Soil water depletion(△SWS)by crop generally decreased with the increase of irrigation and rainfall,while △SWS for the whole