Abstract: Heilonggang Area was an important wheat production region in Hebei province,but characterized with serious water shortage,thus the water-saving and high-yielding technique was quite essential.During the 2007/2008 wheat production year,some special features for wheat production appeared,and the case was that delayed sowing date did not lead to yield lost,moreover,at a very low ET(328.1mm),a high yield of 7155.9 kg/ha and a high WUE of 2.18 kg/m3 were realized.The reason for the case was analyzed by measures of irrigation experiment combined with comparison of historical climate data.The result showed that the special features of the case were mainly attributed to the following weather factors.1) suitable temperature pattern: that during reviving,lodging and booting periods the temperature were higher and the accumulated temperature were 147.3℃ and 58.9℃ higher than that of historical and 2000 later that benefited the late sowing wheat growth;while the lower temperature at kennel filling period,the accumulated temperature 26.7℃ lower than that of 2000 later,which was good for kennel filling.2) suitable rainfall distribution: the rainfall distribution i.e less before booting stage but much more during booting and kennel filling stage than normal played a main role for the case instead of the amount,which was only 20mm greater than normal year.3) suitable sunlight distribution: that at reviving stage the accumulated sunlight hour was 15hours longer than normal,which was good for late sowing wheat reviving and development,and during May,the kennel filling stage,the accumulated sunshine was 25 hours longer than normal,which was conductive to the kennel filling.It was the comprehensive effects of the above weather factors that lead to the result of high yielding and high WUE.The result was well implied for study on water-saving and high-yielding wheat cultivation technique in the future.

Key words: Heilonggang Area, Climate condition, Wheat production feature, WUE