特优559系江苏省沿海地区农科所用龙持浦A与盐恢559配制而成的舢型杂交中稻新组合。1993～1994年两年江苏省区试平均亩产582．5公斤，位于参试7个组合之首，比汕优63增产6．33％；1994年参加全国杂交舢稻区试，平均亩产601．8公斤；1995年引入我市。宣州市东门水稻良种场试种30 Youyou 559 is a new hybrid rice combination made from Longjiapu A and Yanhui 559 used in the agricultural sciences in coastal areas of Jiangsu Province. In the two years from 1993 to 1994, Jiangsu Province experimented with an average yield of 582.5 kilos per mu, ranking the first of the seven combinations tested, yielding a 6.33 percent increase over Shanyou 63; participating in the national hybrid rice trial in 1994 with an average yield per mu 601.8 kg; introduced to our city in 1995. Xuanzhou Dongmen Rice Variety Plant Trial Planting 30