文旦健康管理生產體系關鍵技術研發與推動成果

Abstract

花蓮地區降雨多，是容易發生黑點病的環境條件。本試驗利用生理落果後進行夏季修剪之處理，研究減少花蓮地區文旦黑點病受害狀況之可行性。連續二年的試驗結果顯示，夏季修剪對文旦單株產量與日傷果的數目不會產生明顯之影響，但是可以將文旦果實的黑點病受害度分別由2.5與1.5明顯降低至1.7與0.8。對果實重量、果汁率與可溶性固形物含量等品質性狀之影響並不明顯，但可以顯著降低果實酸度；例如2013年酸度由對照組的0.54％降低至處理組的0.49％。夏季修剪可以降低果皮的綠色度與提高果皮的黃色度，但與對照組之間的差異並不明顯。 The eastern region of Taiwan is prone to Citrus melanose. In order to decrease the infection of melanose of wentan pomelo, summer pruning was tested in this study. The 2 year’s results showed that the influence of summer pruning on the yield and sun scald fruit’s number was not significantly, but that could significant decrease the degree of melanose infection from 2.5 and 1.5 to 1.7 and 0.8. Summer pruning decreased the acidity of fruit from 0.54% to 0.49% in 2013, but the influence of summer pruning on fruit color was not significantly, and neither was fruit quality which includes fruit weight, total soluble solids, and percentage of juice.