Abstract: Growth and changes of nutrient elements of "pearl" guava fruits during flowering in autumn season were investigated. A rapid fruit growth from 0 to 65 days after flowering, then a stunted growth until 85 days, and a rapid enlargement during the later growth were observed. The growth rate of fruits exhibited double ‘S’ logistic curve. N, P, K, Ca, Mg concentrations of fruits decreased with the fruit growth, but more and more in absorbing capacity, especially with N, K elements.

Key words: guava fruit, growth, nutrient element, concentration

摘要： 本文探讨秋季开花的珍珠番石榴果实生长发育及其矿质元素含量的变化。结果表明,秋花春果的番石榴果实生长可分为三个阶段,即幼果较快生长期、生长停滞期和果实迅速膨大期。果实生长曲线呈双S型。随着果实生长发育,果实N、P、K、Ca、Mg相对含量降低,但其吸收总量逐渐增多,尤其在果实生长后期,对N、K养分需求剧增。

关键词: 番石榴果实, 生长, 营养元素, 含量