| Under different conditions of soil water at planting stage(SW),the drought-resistance of 14 dryland winter wheat varieties from different ecological regions was researched by the means of drought-resistance index,subordinate function and fuzzy synthetic judgment.It was shown that the yield and WUE of dryland winter wheat were improved significantly along with the increasing of SW.Under the same SW level,there were remarkable differences of yield and WUE among different varieties;and the effects of SW to different ecological types of winter wheat were also different.The results of drought-resistance index,subordinate function and fuzzy synthetic judgment were well consistent,and they could be used to evaluate the drought-resistance of dryland winter wheat.The droughtresistance of the tested varieties from different regions appeared as: east Gansu >Shanxi >Beijing >Weibei highland >Huanghuai plain.Drought stress has an important significance to drought-resistance identification. |