薑荷花球根大小與帶貯藏根與否對切花及球根生產之影響

Effect of Corm Size and Storage Roots on Cut Flowers and Corm Production of Curcuma alismatifolia

本試驗旨在探討薑荷花球根的大小與球根帶貯藏根與否對切花及子球產量與品質之影響。以粉紅色的薑荷花（Curcuma alismatifolia）為材料，將球根依直徑大小分為大球（2.0 cm以上）、中球（2.0~1.5cm）、及小球（1.5cm以下）第三級，各級球根又分為帶2~3個貯藏根或不帶貯藏根二組，共6處理，於民國八十三年二月二十三日種植，並進行萌芽出土率及生長測定。結果顯示，大球與中球萌芽速度比小球快；帶貯藏根者除小球外萌芽速度比不帶貯藏根者快；但種植後98天各處理萌芽出土率均可達90%以上。平均切花品質在處理間雖無顯著差異，但萌芽早開花，而且七月及八月之切花花穗長度與切花鮮重均顯著優於九月及十月之切花。大、中、小球之平均單株切花產量分別為3.24、2.55、1.8枝／株，平均單株子球產量則分別為7.03、6.68、5.31球／株；球根帶貯藏根與否對切花產量與子球產量之影響並不顯著。

This experiment was conducted to study the effect of corm size and corm with or without storage roots on flowering and daughter corm production of Curcuma alismatifilia. The treatments included 3 corm sizes namely, large corm (over 2.0 cm in diameter), medium corm (1.5-2.0 cm), and small corm (below 1.5 cm). Each corm size was divided into two subgroups, one with 2-3 storage roots and the other with no storage root. The result showed that large and medium corms emerged earlier than small corms. Corms with storage roots emerged faster than those without storage root, except small corms. However, the final emergence of all of the treatments exceeded 90%, evaluated at 98 days after planting. The average qualities of all haryested flower stalks were not significantly different among all treatments, but those corms emerged earlier usually had earlier flowering. Flower stalks harvested from July to August had longer inflorescence and higher fresh weight than those harvested in September and October. On average, the yield of flower stalks for each large, medium and small corm were 3.24, 2.55 and 1.8, respectively; and the yield of daughter corms for each corm size were 7.03, 6.68 and 5.31, respectively. The effects of storage roots on yield of flower stalks and daughter corm's production were not significant difference among the treatments.