“泗优422”系江苏农科院粮作所用“泗稻8号”作不育系,“轮迥422”作恢复系配组的杂交晚粳新组合。试验示范表明:“泗优422”丰产性和适应性强。为探索”泗优422”利用价值,以便为大面积生产应用提供科学依据,根据省区试常熟点三年的产量资料, “Siyou 422” is a new combination of late japonica hybrid rice “Sida 8” used by Jiangsu Academy of Agricultural Sciences for sterile line and “Jundun 422” as restorer line. Experimental demonstration shows that: “Si excellent 422” high yield and adaptability. In order to explore “Si You 422” value, in order to provide a scientific basis for large-scale production applications, according to provincial-level trial of cooked three years of production data,