江苏沿海地区农科所采用“籼掺粳恢恢交低世代测鉴”专利育种方法选育出大粒、高千粒重的籼型恢复系盐恢1120,再利用盐恢1120与优质三系不育系天丰A配组,育成了优质高产多抗三系杂交水稻新品种天优1120。该品种具有大粒优质(米质达国标三级优质米标准)、适口性好、高产稳产、增产潜力大、熟期适中、适应性广、抗病性强等特点。2008年通过江苏省农作物品种审定。本文介绍了该品种的选育过程、特征特性及其启示。 Jiangsu Province, the agricultural sciences by “indica hybrid rice japonica restore low pay generation of provenance” patented breeding method of breeding large grain, high grain weight indica restorer Yanhui 1120, and then use salt restore 1120 and high quality three-line sterility Department of Tianfeng A group, bred high quality and high yield polycation three lines of new hybrid rice Tian You 1120. The variety has the characteristics of large grain quality (rice quality reaches the third grade high quality rice standard), good palatability, high and stable yield, large yield potential, moderate maturity, wide adaptability and disease resistance. In 2008 through the Jiangsu Province crop varieties validation. This article describes the breeding process of the species, characteristics and implications.