三系杂交水稻“丰田优089”高产制种技术

High-yielding Seed Production Technology of Three-line Hybrid Rice"Fengtianyou No.089"

"丰田优089"是利用不育"丰田1A"与"桂恢089"配组育成的感光型优质杂交稻品种,适合在华南南部做晚稻种植。文章对其选育经过、特征特性、产量表现和制种技术要点进行总结,重点阐明基地选择、确定亲本播差期、培育多蘖壮秧、田间科学管理、花期预测与调节以及巧施"九二〇"等高产制种技术,为三系杂交水稻"丰田优089"大面积制种提供科学技术指导。

"Fengtianyou No.089"is a high-quality light-sensitive hybrid rice variety bred by crossing sterile"Fengtian No.1 A"and"Guihui No.089",which is suitable for late rice planting in southern China.In this paper,the breeding process,characteristics,yield performance and key points of seed production technology were summarized,and the high-yield seed production technologies such as base selection,determination of parental sowing date,cultivation of strong seedlings with multiple tillers,scientific management in the field,flowering prediction and regulation,and skillful application of"920"were emphatically expounded,which provided scientific and technological guidance for largescale seed production of three-line hybrid rice"Fengtianyou No.089".