Abstract: "Different varieties of wheat were irrigated differently for five years under same high soil fertility condition,it was indicated that the yield of wheat under irrigation condition was higher significantly than that of under drought.The yield of wheat under 2-4 irrigation was not different significantly,which demonstrated the potential of water-saving in wheat farming system was tremendous.In the year of rainless,the yield increased obviously with the increasing of irrigation;but the yield of 1-4 irrigation increased slightly in the year of normal rainfall;while,in the year of abundant rainfall,the wheat yield of drought condition reached 7 500 kg/ha,under 1-2 irrigation reached 8 250 kg/ha,above 2 irrigation the yield did not increase or even decrease,it was indicated that excessive irrigation was not favorable to yield.The water use efficiency decreased with the increasing of irritation,the water use efficiency of 0-4 irritation was respectively 18.29,16.62,15.53,14.62 and 13.18 kg/(ha·mm).The difference of the capacity of drought resistance and water-saving in different varieties was significant.The variety of Jinmai 47 was appropriate for drought condition,and showed high drought resistance without irrigation in the whole growth period.Under drought condition or 1-2 irrigation Shijiazhuang 8,Shimai 15,were prominent.under 2-3 irrigation,Han 6172,Shimai18 represented the characters of water-saving and the high yield,while the yield of Shimai 18 was the highest,its average yield reached over 9 000 kg/ha,and the highest yield reached 10 138.8 kg/ha.The difference of WUE of different varieties was significant,the WUE of Shimai 15,Shijiazhuang 8 and Han 6172,were higher than that of other varieties,and their yield were prominent under water-saving condition,consequently,these varieties had the characters of high yield and water-saving. "

Key words: Winterwheat, Technology of highyield and water-saving, Variety-selecting

CLC Number: 

• S512.11