晚稻齐穗后，一些农民认为晚稻产量已定局，就放松了晚稻的后期管理，这是不妥当的。因为晚稻齐穗期干物质的积累仅完成1／3，还有2／3是在齐穗后完成的。有的年份晚稻前期长相很好，由于灌浆期气象条件差。放松后期管理，加上病害流行，品质变差，产量下降；也有的年份虽然前? After the late rice hybrids, some farmers think that late rice production has been set to relax the late management of late rice, which is not appropriate. Because the dry matter accumulation in late rice at heading stage only completed 1/3, and 2/3 is completed after heading. In some years, late rice looks good early, due to poor weather conditions during the filling stage. Relaxation of post-management, coupled with the prevalence of diseases, deterioration of quality, production decline; some years although the former?