苏玉9号系江苏沿江地区农科所以414作母本,812作父本杂交育成。1995年4月通过江苏省农作物品种审定委员会审定,该品种集早熟高产、优质为一体,是国内大面积单产首次显著超过掖单13的早熟玉米新品种,被江苏省定为“九五”重点推广品种。1　产量高。在1993～1994年江苏省玉米品种 Su Yu 9 Department of Agricultural Sciences in Jiangsu Province along the Yangtze River so 414 for the female parent, 812 parental cross bred. April 1995 through the Jiangsu Provincial Crop Variety Approval Committee validation, the early varieties of early maturity and high yield, high quality as one of the large-scale domestic production for the first time significantly more than Yeda 13 precocious maize varieties by Jiangsu Province as the “Ninth Five-Year” focus Promotion of varieties. 1 high yield. In 1993 ~ 1994 corn varieties in Jiangsu Province