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郑单14号是河南省农科院粮作所于1989年育成的大穗型玉米杂交种，在1994年河南省农村科技博览会上荣获金奖。产量表现1992年在河南省玉米预备区试中平均亩产5366公斤，比对照种沈单7号亩增产102．1公斤，为23·5％；1993～1994年在河南省玉米区试（套种组）中平均亩产543．8公
Zheng Dan No.14 is a large-spike corn hybrid bred in 1989 by Henan Academy of Agricultural Sciences Grain Bureau and won the gold medal at Henan Rural Science and Technology Expo in 1994. Yield performance In 1992, the average yield per mu of 5366 kg in the corn preparation area test of Henan Province was 102.1 kg which was 23.5% higher than that of Shen No. 7 single-crop cultivar of Henan Province. In 1993 ~ 1994, Group) in the average yield 543.8 male