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两系杂交晚籼两优277具有高产稳产、抗逆性较强、米质优、熟期适宜等特点,2004年通过湖北省农作物品种审定委员会审定。根据潜江、荆门的制种实践,总结出合理安排父母本播差期、培育适龄多蘖壮秧、合理密植、促进父母本平衡生长和提高母本异交结实率等高产制种技术。
The two-line hybrid indica rice Liangyou 277 has the characteristics of high and stable yield, strong resistance, good quality rice and suitable maturity. It was approved by Hubei Province Crop Variety Approval Committee in 2004. According to the seed production practice of Qianjiang and Jingmen, this paper summarizes the high-yielding seed production techniques such as rational arrangement of parental sowing date, breeding of tillering seedling of appropriate age and close planting, promoting balanced growth of parents and improving the rate of outcrossing of female parent.