山西省是全国冬小麦主要产区之一,由于自然条件、栽培制度、品种类型的不同,形成了明显的自然区划,即南部中熟冬麦区和中部晚熟冬麦区。南部中熟冬麦区种植的小麦品种,多为弱冬性至冬性,中部晚熟冬麦区为冬性至强冬性。从小麦品种的演变历史来看,也有着明显的规律性。南部麦田面积较大,品种少而单纯。中部麦田面积较 Shanxi Province is one of the main producing areas of winter wheat in the country. Due to the differences of natural conditions, cultivation systems and types of cultivars, obvious natural divisions have formed, namely the mid-maturing winter wheat region in southern China and the late maturing winter wheat region in central China. The wheat cultivars planted in southern mid-maturing winter wheat areas were mostly weak winter to winter, late winter ripe winter wheat in the central part of winter wheat. From the evolution of the history of wheat varieties point of view, but also has obvious regularity. Southern wheat fields larger, less variety and simple. Central wheat field area