我省于1976年基本实现甘兰型油菜“三系”配套之后,通过几年的试种示范及生产鉴定,结果表明,杂交油菜有明显的优势。但研究中发现,不育系育性不够稳定,湘矮A中有部分植株出现早期死蕾、初花期有微量花粉、恢复率下降等不良现象,影响了杂交优势的发挥。我们针对存在的问题,采取 After the province basically completed the “three lines” of Brassica napus in 1976, it passed several years of trial planting demonstration and production identification. The results showed that hybrid rape had obvious advantages. However, it was found in the study that the fertility of CMS was not stable enough. Some plants in Xiangzai A had early dead buds, trace pollen in early florescence and the recovery rate decreased, which affected the utilization of heterosis. We deal with the problems that we have