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(一)“陕农704”:由省粮作所于1965年用陕农17号作母本,丰产3号作父本杂交,至1970年育成。原系谱号为6521-3-18-1。弱冬性,冬前发育较快,成穗率高,株高100～110厘米。穗长方形,长芒,白壳白粒,品质好,千粒重35克左右。成熟偏早,比丰产3号早2～3天左右。耐旱力较强。高抗条锈病和赤霉病,轻染叶锈和叶枯病。抗倒伏能力中等。 1971年在我院品比试验中,亩产775.2斤,比对照品种丰产3号增产19.5％。1972年在关中地区23个点试验,有15个点增产,平均增产16.8％,8个点减产,平均减产4.5％。另据扶风农技站9个点试验,平均比对照增产3.8％;宝鸡县农技站5个点试
(A) “Shaanxi farmer 704”: by the provincial grain in 1965 with Shannong 17 as female parent, bumper crop No. 3 as the male parent to bred in 1970. The original pedigree number is 6521-3-18-1. Weak winter, rapid development before winter, into a high ear, plant height of 100 to 110 cm. Spike rectangular, long-mans, white shell white, good quality, grain weight of about 35 grams. Mature early, than early 3 to 2 days 3 days or so. Drought tolerance stronger. High resistance to stripe rust and scab, Lightly infected leaf blight and leaf blight. Anti-lodging capacity is medium. In 1971 in our hospital product ratio test, 775.2 kg per mu, 19.5% more than the control breed. In 1972, 23 points were tested in the Guanzhong area, with 15 points yielding an average increase of 16.8% and 8 points with a yield reduction of 4.5% on average. According to Fufeng Agricultural Technology Station 9-point test, an average of 3.8% more yield than the control; 5 points of agricultural technology station in Baoji County