1990年选用优良亲本进行放任授粉的集团杂交 ,育成甘薯新品种金山 12 55,于 1996和 1997年分别通过专家技术鉴定及福建省农作物品种审定委员会的审定 .该品种表现高产、优质、高抗蔓割病、耐旱及耐贮等特性 ,在莆田、惠安、晋江、漳浦、福清等 16个县 (市 )示范推广 ,到 1999年累计种植面积 370 2 7hm2 ,已取得了较大增产效益 . In 1990, the fine parents were used to carry out the pollination of the group, and a new sweet potato variety Jinshan 12 55 was bred, which was certified by experts and approved by Fujian Crop Variety Approval Committee in 1996 and 1997, respectively, which showed high yield, good quality and high resistance to vine Such as Putian, Huian, Jinjiang, Zhangpu and Fuqing, with a total planting area of ​​3702.7hm2 in 1999, which has achieved significant yield-increasing benefits.