磷是桃树必需的大量矿质营养元素。苗木及移植的幼树缺磷时生活力下降，盛果期桃树缺磷时生长受到抑制，叶色转深或呈紫红色，花芽小而少，果实变小，味变劣，品质下降。１桃树缺磷症状轻度缺磷时，桃树生长仍正常，但枝条较少而细。严重缺磷时，叶片先呈暗绿色再转青铜色或发? Phosphorus is a perennial essential mineral nutrient element. Seedlings and transplanted saplings lack of phosphorus decreased viability, peach phosphorus growth in full-blown growth was inhibited, leaf color turned dark or fuchsia, flower buds small and less, the smaller the fruit, the worse the taste, quality declines. 1 peach phosphorus deficiency mild phosphorus deficiency, peach growth is still normal, but the branches less thin. Serious lack of phosphorus, the first dark green leaves turn bronze or hair?