杂交晚稻营养生长期优势强,而转入生殖生长后期优势减弱,表现为“分蘖有余,穗数不足;穗大有余,结实不足,前劲有余,后劲不足”.因此,掌握中后期几种肥的施用技巧,可以扬长避短,充分发挥杂交晚稻的增产潜力. Hybrid late rice has a strong advantage in vegetative growth stage, but has a weakened advantage in the later stage of reproductive growth, which is manifested as “tillering more than enough spikes, spike bigger, less sturdiness, less stamina and stamina.” Therefore, The application skills, can avoid weaknesses, give full play to the yield potential of hybrid late rice.