按照甘蓝型双低杂交油菜高产制种的产量和形态指标 ,实施适时播种 ,合理安排父母本行比 ,达到高产群体结构。通过加强肥水管理 ,摘薹促壮 ,提早砍除父本 ,促进薹多、薹状、多分枝、多结角 ;严格排杂去劣 ,确保种子质量达到国标二级以上 According to the yield and morphological index of high-yielding seed production of double-low rape hybrid in Brassica napus, timely sowing was carried out and the ratio of parents to the ratio was reasonably arranged to reach the high-yield population structure. By strengthening the management of fertilizer and water, pick the sprouting to promote strong, early removal of the male parent, and promote more sedge, sprouting, more branches, more knot angle; strict troubleshooting to ensure the quality of seeds up to two or more GB