锌、铁对平邑甜茶磷、钾和钙分配的影响  

Effects of Phosphorus, Potassium and Calcium Distribution in Malus hupehensis Rehd Under Different Zinc and Iron Levels

作　　者：王衍安[1] 李坤[1] 刘娣[2] 董佃朋[1] 聂建亮[1] 李德全[1] 束怀瑞[2] 

机构地区：[1]山东农业大学生命科学学院/作物生物学国家重点实验室,山东泰安271018 [2]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《中国农业科学》2008年第5期1416-1422,共7页Scientia Agricultura Sinica

基　　金：国家科技支撑计划项目(2006BAD10A10);国家“863”计划项目(2006AA10Z271);作物生物学国家重点实验室项目(200505)资助

摘　　要：【目的】分析平邑甜茶锌铁浓度处理下磷、钾和钙的分配特性及相互关系,解释苹果树在锌铁处理下矿质元素间的平衡规律。【方法】以平邑甜茶(Malus hupehensis Rehd)为试材,采用正交设计方案,通过溶液培养法培养幼苗,分析了不同锌铁供应水平下营养器官磷、钾和钙的浓度差异、转运系数及各元素之间的相关性。【结果】缺锌导致根中磷、钾和钙的浓度显著降低;茎和叶中钾浓度降低,磷和钙的浓度显著升高。高锌对磷、钾和钙在各器官中的浓度影响不显著。在铁处理中,高铁和低铁均使根系钙和磷的浓度降低,低铁使地上部的钙浓度升高。转运系数显示,低锌降低了钾向地上部的转运,高铁和低铁均降低钾向地上部的转运;提高铁处理浓度对磷向地上部转运具有显著的促进作用。相关性分析结果表明,根中锌浓度与磷、钾、钙呈极显著正相关性,磷和钙与锌在茎和叶中均呈负相关。【结论】低锌条件下,降低了钾向地上部的分配,促进磷和钙在地上部的累积;在根中磷、钾和钙的浓度降低。中锌和高锌处理下,提高铁的处理浓度,导致各器官钙浓度显著降低。[ Objective ] In order to explain the homeostasis regulation among mineral elements under different zinc and iron treatments in apple trees, the distribution characteristics and interaction relation of phosphorus, potassium and calcium of M. hupehensis Rehd were studied, [ Method] Distribution characteristics of phosphorus, potassium and calcium, translocation coefficients, and their correlation in organs of apple stock-M, hupehensis Rehd under zinc and iron interaction were analyzed with solution culture and orthogonal design. [Result] In low zinc treatment, 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, Translocation coefficients showed that transport of potassium to the shoots was reduced at low zinc, and transport of potassium to the shoots all decreased at high and low iron treatment. Phosphorus transport to the shoots was significantly promoted when increased iron concentration in solution, 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] In low zinc treatment, potassium distribution in shoots declined, while the accumulation of phosphorus and calcium increased in shoots. The phosphorus, potassium and calcium concentrations all significantly reduced in roots. At proper and excess zinc, the concentrations of calcium in organs decreased significantly when increased the iron concentration of solution.

关 键 词：平邑甜茶(Malus hupehensis Rehd) 锌 铁 矿质元素 分配 

分 类 号：S661.1[农业科学—果树学]