根据我省中部地区干旱多灾的气候特点,我们采用常规育种的方法,选育出了优良的旱地春小麦品种752-5-2-2。该品种在我省干旱、半干旱地区种植表现较好,一般亩产110～325公斤,较定西24号增产12％～47.9％。1990年7月5日经省、市专家现场鉴定,一致认为是继定西24号后的理想接班品种。一、选育经过早地春小麦752-5-2-2是会宁县农科所于1975年用会宁10号作母本,贵德黑芒作父本,经过南繁北育的20个种收过程选育成功的。1980年开始进入产量比较试验,经过10多年的试验、示范种植,在会宁县较定西24号亩增产5～32.5公斤,较会宁 According to the climate characteristics of drought and disaster in the central part of our province, we adopted the method of conventional breeding and bred the fine dry spring wheat variety 752-5-2-2. The varieties in the arid and semi-arid areas in our province planted better performance, the general per-mu yield of 110 to 325 kilograms, compared with Dingxi 24 yield 12% to 47.9%. July 5, 1990 by the provincial and municipal experts on-site appraisal, agreed that after the Dingxi No. 24 is the ideal follow-up varieties. First, the breeding After early spring wheat 752-5-2-2 is Huining County Department of Agricultural in 1975 with the Huining 10 as the female parent, Gui Shirengang as the male parent, after the South Fan north of 20 species Proceeding breeding process success. Beginning in 1980, the trial of yield comparison, after 10 years of experiment, demonstration planting, in Huining County, Dingxi No. 24 mu yield 5 to 32.5 kg, rather than the Ning