Potassium ions balance anions and organic acids, and are thus important in osmoregulation ,the control of stomatal opening, and leaf movements(through their effects on the turgor of pulvini).

• 钾离子平衡阴离子和有机酸，因此在渗透调节、控制气孔的开闭以及叶运动（通过叶枕膨大的影响）中很重要。