[Objective] To study the variation of mineral elements of "Hosui pear" during reflorescence period.[Method] This research was conducted to establish the dynamic change rules of mineral elements on shoot and leaf of Hosui pear(Pyrus pyrifolia Nakai) during reflorescence period.N,P,K,Ca and Mg elements were monitored for serious reflorescence as treatment and slight plant as CK.[Result] The content of N,P,K,Ca and Mg of leaves remained stable from May to August and sudden rose when the refoliation began in early September,while the mineral elements on shoot was lower than that of leaf at the same time,which also remained stable all the time.[Conclusion] It has no direct correlation between reflorescence and the contents of mineral nutrition in the growth and development period.%[目的]研究“丰水”梨二次开花过程中矿质养分变化规律.[方法]以二次花发生严重的“丰水”梨代表性植株为处理株,以不发生或少发生二次花的植株为对照株,分析“丰水”梨叶片和枝条中的5种主要矿质元素(N、P、K、Ca、Mg)含量变化规律.[结果]叶片中5种主要元素在5-8月总体变化平稳,在9月初返青发生时骤然升高;而枝条中5种矿质养分较对应的叶片中的养分含量低,且在二次花发生过程中保持平稳的状态.[结论]“丰水”梨二次花的发生与发生前后植株体内矿质营养水平关联不大.
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