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紧凑冀承单九号系承德县种子公司于1989年培育的一个杂交玉米种。1995年9月通过省农作物品种审定委员会审定。1990年以来．该品种在承德和陕西省大面积示范种植，平均667m2产660公斤，最高840公斤，深受农民欢迎，是一个高产稳产较有发展前途的白粒玉米杂交种。该品种属中熟种
Compact on the 9th Chengcheng Chengde seed company on the 9th breed a hybrid corn in 1989. In 1995 September through the provincial crop variety examination and approval committee. Since 1990. The breed was planted in a large area in Chengde and Shaanxi Provinces with an average yield of 660 kg at 667 m2 and a maximum of 840 kg. It is welcomed by peasants and is a white-grain corn hybrid with high yield, stable yield and promising development. The species is mature