“泗优 4 18”是徐淮地区农科所与北方杂交粳稻研究中心合作 ,以“泗稻 8号”与“Ｃ4 18”配组 ,于 1995年育成的迟熟中粳杂交组合。我市 1999年进行品比试验 ,产量名列前茅 ,2 0 0 0年扩大试种 ,种植面积2 0 0亩 ,实收亩产达 5 80ｋｇ ,为探索“泗优 4 18”高产栽培技术 ,2 0 “Siyou 4 18” is a hybrid combination of late maturing Chinese japonica cultivated in 1995 by the Agricultural Science Institute of Xuhui District in cooperation with the Northern Hybrid Japonica Research Center, “Sida 8” and “C4 18”. In 1999, we carried out the ratio test in 1999, with the highest output. In 2000, the trial planting was expanded with a planting area of ​​200 mu and a yield of 580 kg per mu. To explore the high-yielding cultivation techniques of Siyou 4 18,