D两优311是湖南省贺家山原种场与湖南湘穗种业有限责任公司合作选育的两系杂交晚稻新组合,是以强恢复系R311为父本,与湖北大学生命科学学院选育的优质两用不育系HD9802S为母本杂交配组育成的晚籼中熟组合。文章介绍了该组合亲本的选育过程,以及组合的特征特性、栽培技术与制种技术要点。 D Liangyou 311 is a new two-line late-season hybrid rice combination developed by Hejiashanyuan Seed Farm in Hunan Province and Hunan Xiang Sui Seed Co., Ltd.. Breeding is based on the strong restorer line R311 as the male parent and with the College of Life Science, Hubei University Of high-quality dual-use sterile line HD9802S for the female parent combination of late indica medium-maturing combination. The article introduces the breeding process of the combined parents, as well as the characteristics of the combination, cultivation techniques and seed production techniques.