龙两优750是由中国种子集团有限公司三亚分公司用湖南农业大学选育的不育系龙S与自选恢复系中种恢750测配而成的感温型优质两系杂交稻新组合。该组合米质达国标优质3级，丰产性好，抗性优于对照特优0009，2016年4月通过海南省农作物品种审定委员会审定。文章介绍了该组合的选育经过、特征特性、栽培技术及制种技术要点。

Longliangyou 750 is a new temperature sensitive two-line hybrid rice combination, derived from Long S, a new two-line male sterile line which was bred by Hunan Agricultural University, and Zhongzhonghui 750, which was bred by Sanya Branch of China National Seed Group Co. Ltd. It had fine quality, reached the three level of national standards of indica rice. Besides, it showed higher yield and stronger disease resistance than Teyou 009（Ck） in the regional trails of Hainan Province. It was registered and released for commercial production by Hainan Crop Variety Appraisal Committee in April, 2016. Its breeding procedure, major characteristics, cultivation and seed production techniques were introduced in this paper.