冬小麦灌浆期钾的吸收呈一元二次曲线,灌浆开始1～4d,其吸钾活力增加缓慢,以后呈直线增加,第18d吸钾活力达高峰值,接着迅速下降。穗部钾呈不断增加趋势,其它各器官为钾的暂贮器官,都是吸收后又输出,并保有一定钾素比率,直至成熟。除叶片外,其它器官钾的分配比率均与根系吸钾活力呈显著相关。 The potassium uptake during winter wheat filling stage showed a quadratic curve with 1 ~ 4 days of filling. The potassium uptake increased slowly, and then increased linearly. The peak of potassium uptake reached its peak on the 18th day, then decreased rapidly. Spike potassium is a growing trend, other organs for the temporary storage of potassium organs, are absorbed and then output, and maintain a certain potassium ratio until maturity. Except leaves, the ratios of potassium in other organs were significantly correlated with potassium uptake by roots.