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四单12号是四平市农科所1978年以自交系“485”为母本,“413”为父本杂交育成。1980—1981年在所内产比试验比对照种吉双83增产13.5%。1982—1984年参加吉林省玉米杂交种中熟组联合区域试验,三年41点次平均亩产591.5公斤,比吉单102增产13.1%,比吉双83号增产17.3%。三年产量都居该组参试杂交种之首。同期,在吉林省舒兰、蛟河、扶余、东丰、伊通以及黑龙江省双城、五常、东宁、肇州、滨县、肇东等地进行生产试
Sidan 12 is the Siping Agricultural Institute in 1978 with inbred lines “485” as the female parent, “413” for the male parent bred. In 1980-1981, the yield ratio test in the institute was 13.5% more than that of the control variety Kyrgyzstan double 83. From 1982 to 1984, he took part in the joint regional experiment of maize hybrids in Jilin Province. The average yield per mu was 591.5 kg at 41 o’clock in three years, 13.1% higher than that of Jidan 102 and 17.3% higher than that of Qi Ji double 83. Three-year production ranks first in the group of hybrids tested. In the same period, production trials were conducted in Shulan, Jiaohe, Fuyu, Dongfeng, Yitong and Shuangcheng, Wuchang, Dongning, Zhaozhou, Binxian and Zhaodong in Heilongjiang Province