【摘要】 以盛果期红富士苹果为试材 ,在大田条件下研究了补锌措施对缺锌小叶病防治及锌运转和营养规律的影响。结果表明 ,10月中旬落叶前根外喷施 15 %ZnSO4·7H2 O可大幅度提高枝干锌贮藏营养水平 ,有利于平衡锌在根、枝、叶间的分配 ,调节树体内P、K、Zn间的平衡 ,提高锌运转能力和有效性 ,满足树体周年发育需求 ;秋季土壤施锌肥可提高根锌贮藏水平 ,但锌的运转力相对较低 ;萌芽前根外喷锌可提高早期枝叶锌营养水平 ,但持效期短。花后 3周根外喷锌对锌运转影响很小更多还原

【Abstract】 Red Fuji apple trees of Zn deficiency were used as material in the experiment, effect of different Zn application methods on the regularity of Zn transportation and nutrition was studied. The storage of Zn in the branch was greatly increased by foliar application of the solution of 15% ZnSO 4·7H 2O before abscission. It had advantage of keeping Zn content balance among leaf, branch and root as well as among P, K and Zn. It increased the transportation and useful form of Zn, and satisfied the need of growth in apple trees, the restoration rate of diseased shoots was great and the effect was steady and long. The content of root Zn was improved by Zn application in soil at the autumn; however, the transportation of Zn was relatively slow. Leaf spray application of ZnSO 4·7H 2O improved the content of branch Zn at the early stage of three weeks before germination, however, the period of effective Zn being supplied was short. It had little effect on Zn transportation by spraying the solution of ZnSO 4·7H 2O on the leaves after three weeks of blooming.更多还原