“金优458”是用优质不育系“金23A”与江西省农科院水稻所育成的早稻强恢复系“R458”配组而成的高产早籼迟熟组合。该组合株叶形态好,分蘖力强,结实率高,千粒重大,制种产量高,适宜在长江流域中下游地区作迟熟早稻种植。介绍了“金优458”的特征特性和高产制种技术要点。 “Jinyou 458” is a combination of high yield early indica and late indica with high quality sterile line “Jin 23A” and early rice restorer line “R458” with rice from Jiangxi Academy of Agricultural Sciences. The combined plant has good leaf morphology, strong tillering ability, high seed setting rate, large grain weight and high seed yield, and is suitable for planting late rice in the middle and lower reaches of the Yangtze River. Introduced “Jinyou 458 ” characteristics and characteristics of high-yielding seed production techniques.