以扬稻6号为母本、江西东乡野生稻为父本进行杂交、回交,育成野栽交强优恢复系F302,再与两系不育系Y58S配组育成高产、优质、适应范围广的两系杂交中籼稻新组合Y两优302,于2008年通过湖南省审定,2010年通过国家审定。介绍了该组合的选育经过、主要特征特性、栽培及制种技术要点。 Using Yangdao 6 as female parent and Jiangxi Dongxiang wild rice as male parent, hybridization and backcrossing were carried out to cultivate wild plant Z.japonica. F302 was bred with high yield and good quality and wide range of adaptation Y Liangyou 302, a new two-line indica hybrid rice combination, was approved by Hunan Province in 2008 and passed the national certification in 2010. Introduced the combination of breeding, the main characteristics, cultivation and seed production techniques.