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[目的]选育粳不籼恢亚种间杂交稻新组合春优618。[方法]用早花时矮秆早熟晚粳不育系春江16A与偏籼型广亲和恢复系C18配置得到籼粳亚种间杂交稻组合-春优618,并对其主要特征特性进行观察和分析。[结果]春优618产量高,较耐肥抗倒,程氏指数为15,属偏粳型,中抗白叶枯病和条纹叶枯病,中感稻瘟病,感褐稻虱,两年米质各项指标达到食用稻品种品质部颁4等和4等。[结论]春优618具有杂种优势强、茎秆粗壮、抗倒性好、穗形大、耐寒性好、产量高、适应性广等特点,适宜在浙江省作单季晚稻种植。
[Objective] The research aimed to screen a new combination of non-indica subspecies hybrid rice Chun You 618 with japonica rice. [Method] The hybrid rice combination of indica and japonica subspecies, Chunyou 618, was obtained from early spring sterile line Chunjiang 16A of early dwarfing early hybridization and C18 of extended compatibility restorer line of indica-japonica hybrid rice. The main characteristics and characteristics were also observed And analysis. [Result] Chunyou 618 was high in yield, more resistant to fertilizer and anti-down, with Cheng’s index of 15, which belonged to japonica type, moderately resistant to Bacterial blight and stripe leaf blight, moderately susceptible to rice blast, Rice quality indicators reached the quality of rice varieties 4 and 4 and other ministries. [Conclusion] Chunyou 618 was suitable for single season late rice planting in Zhejiang Province due to its advantages of strong heterosis, strong stalk, good lodging resistance, large spike shape, good cold tolerance, high yield and wide adaptability.