培育壮秧是油菜高产和稳产的基础。生产上由于受苗床面积的限制，留苗过密或由于晚稻收获过迟，往往导致油菜秧苗质量差而严重影响产量。几年来，通过广大研究人员的努力，唏效唑与种子包衣技术对油菜的增产作用已经得到了实践的证明。在三叶期喷施烯效唑能显著地抑制苗高，增 Nurturing strong seedling rape is the basis of high yield and stable yield. Due to the limitation of seedbed area in production, too much seedling retention or late harvesting of late rice often leads to poor quality of rapeseed seedlings and seriously affects the yield. In recent years, thanks to the efforts of a large number of researchers, the effect of paclobutrazol and seed coating technology on rapeseed production has been proved by practice. In the clover sprayed with uniconazole can significantly inhibit the height, increase