摘要： 一、調查採收時期對不同番石榴品種果實生育特性及其內在品質變化。 二、調查不同留果數及葉果比在不同季節的基本需求。了解水晶拔與珍珠拔等品種不同月分生產品質概況，藉此推算得知不同月份生產番石榴果實最佳的留果數與葉果比，以為農民週年生產穩定品質及供貨的參考。Guava production in Taiwan is all-year-roundin, major in spring or autumn. But there are different climate condition in different season at local orchard in different season. To improve the guava fruits quality, we pruning the quava trees in different season and to different leaf number and fruit retention.
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