前言干旱是限制我省小麦进一步发展和提高生产水平的主要生态因子。有些年份,由于生长季节出现长时期干旱严重影响小麦正常生长,造成小麦大幅度减产。因为不同品种间的抗旱性有明显的差别,所以选育一些适应干旱条件的小麦品种或较耐旱的小麦品种,对提高我省小麦的稳产性和单位面积产量是具有现实意义的。选育和鉴定小麦品种的抗早性目前办法较多,如近年来国内外有 Preface Drought is the main ecological factor that limits the further development of wheat and the improvement of production level in our province. In some years, due to prolonged drought in the growing season seriously affected the normal growth of wheat, resulting in a significant reduction of wheat production. Because of the obvious difference between the drought resistance of different varieties, breeding some wheat varieties that adapt to drought conditions or drought-tolerant wheat varieties is of practical significance to improve the yield stability and yield per unit area of ​​wheat in our province. Breeding and identification of the anti-early wheat varieties present more ways, such as in recent years at home and abroad