一建国以来,我省已经历了五次小麦品种更新换代,每次更换之后,小麦产量都得到相应提高,充分显示了良种增产的重要作用。如1949—1953年经群众评选,平原50、蚰子麦、葫芦头、大口麦、和尚头等农家良种以及引进的徐州438改良种相继取代了大批的农家品种,单产由十几公斤提高到近50公斤,完成了我省第一次小麦品种更新换 Since the founding of the People’s Republic, our province has undergone five rounds of wheat variety replacement. After each replacement, the yield of wheat has been correspondingly increased, which fully shows the important role of improved seed yield. For example, from 1949 to 1953, a large number of peasant families were successively replaced by Xuzhou 438 improved varieties of plain 50, prunus mume, gourd head, bigmouth wheat and monk’s first-class peasant species and the introduction of improved varieties from 1949 to 1953. The yield per hectare increased from about 10 kilograms to nearly 50 Kg, completed the province’s first wheat variety replacement