关键词: 平邑甜茶（Malus hupehensis Rehd）, 锌, 铁, 矿质元素, 分配

Abstract: 【Objective】 In order to explain the stress mechanism under zinc and iron stress and the homeostasis mechanism among mineral elements in apple trees, the distribution characteristic and interaction relation of phosphorus, potassium and calcium of Malus hupehensis Rehd were studied.【Method】 Distribution characteristic of phosphorus, potassium and calcium, and their correlation in organs of apple stock—Malus hupehensis Rehd under zinc and iron interaction was analyzed, with solution culture and orthogonal design.【Results】 Under zinc deficiency, the concentrations of phosphorus, potassium and calcium significantly reduced in roots, while the concentration of potassium reduced in shoots, but the concentrations of phosphorus and calcium significantly increased. At excess zinc, the concentration differences of phosphorus, potassium and calcium in organs were not significant. Under iron stress, the concentrations of phosphorus and calcium reduced at excess and low concentration of iron in roots, the concentration of calcium increased at low concentration of iron in shoots. Zinc concentration was positively correlated with phosphorus, potassium and calcium concentrations in roots, while zinc concentration was negatively correlated with phosphorus and calcium concentrations in shoots.【Conclusion】Under zinc deficiency, potassium are excessively reduced in all organs; the phosphorus and calcium also significantly reduced in roots, however, the accumulation of phosphorus and calcium increased in shoots. At proper and excess zinc, the concentrations of calcium in organs decreased significantly when increased the iron concentration of solution.

Key words: Malus hupehensis Rehd, zinciron, Phosphorus, Potassium, Calcium, Distribution