耐熱青蔥品種與覆蓋技術緩解夏季高溫對青蔥生育之影響
Other Title
Heat-Resistant Welsh Onion Varieties and Mulching Techniques to Mitigate the Impact of High Summer Temperatures
Start Page
35
End Page
43
ISBN
978-626-7651-22-3
Date Issued
2025-02
Author(s)
鳳山熱帶園藝試驗分所
Abstract
青蔥(Allium fistulosum L.)為重要辛香料作物，全年均可以種植。近幾年夏季高溫多雨，造成青蔥生產受到極大影響，常因供量不穩定而使價格產生波動。本研究針對耐熱青蔥品種篩選及覆蓋資材的應用進行評估，以應對氣候變遷帶來的夏季高溫挑戰。透過非破壞性指標評估不同青蔥品種的耐熱性，並測試泰維克布作為覆蓋材料的降溫效果。結果顯示，‘台農選 1 號’在高溫環境下表現最佳，SPAD 值及分蘗數顯著增加，單欉重與葉數減少比例最低，耐熱性突出。使用泰維克布覆蓋可較稻草降低畦面溫度 10-12℃，土壤濕度穩定，顯著改善青蔥的生長，增加株高、葉鞘寬度，並提升 90-140%的單欉重。
Welsh onions (Allium fistulosum L.) are a crucial spice crop that can be cultivated year-round. In recent years, however, the production of welsh onions has been severely impacted by hot and rainy summers, leading to frequent price fluctuations and unstable supply. This study investigates the selection of heat-resistant welsh onion varieties and mulching materials as strategies to mitigate the adverse effects of high summer temperatures exacerbated by climate change. The heat tolerance of various welsh onion cultivars was assessed using non-destructive indicators, while the efficacy of Tyvek as a mulching material was also evaluated. The results indicate that the cultivar ‘Tainung select No. 1’ exhibited better growth in high-temperature conditions, with significant increases in SPAD values and tiller numbers, along with minimal plant weight and leaf number reductions, demonstrating superior heat resistance. Additionally, compared to straw mulching, Tyvek mulching effectively reduced the soil temperature by 10-12°C, maintained stable soil moisture, significantly improved welsh onion growth conditions, and enhanced plant height, leaf sheath width, and plant weight by 90-140%.
Subjects
青蔥
耐熱性
覆蓋材質
Welsh onion
heat tolerance
mulching material
Publisher
農業部農業試驗所
Type
book part
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