Dressing N fertilizer in flagging stage was most favorable for the accumulation of grain protein and its components,glutenin macropolymer,followed by that in jointing stage.

• 以挑旗期追氮对籽粒蛋白质及其各组分以及谷蛋白大聚合体的积累最有利，其次是拔节期追施氮肥。