优质杂交中稻广两优272制种技术初探

Primary Study on Seed Production Techniques of Fine Quality Hybrid Medium Rice Guangliangyou 272

介绍广两优272双亲的特征特性,并结合湖北的气候特点和制种实践,提出了该组合的主要制种技术措施为选好制种基地;确定双亲的最佳抽穗扬花期和播差期;培育多蘖壮秧;合理行比、插足基本苗;加强肥水管理、建立高产群体;做好花期预测和调控;巧施"920",提高授粉质量;严把种子质量关。

The characteristics of parents of Guangliangyou 272 were introduced and the key seed production techniques of this cultivar were summarized according to the climate of Hubei province and the practice of seed production.The main technical included choosing good breeding base,well-arranging seeding time interval of parents,raising healthy tillered seedlings,suitable density cultivation,transplanting basic seedlings sufficiently,better managing water and fertilizer,constructing high yield group,forecasting and regulating the flowering period in time,spraying '920' skillfully,improving powdering quality,strictly controlling the seed quality.