淹水對莧菜生長及植體水分含量之影響
Other Title
Plant Growth and Water Content of Amaranthus mangostanus in Response to Waterlogging
Journal
中華農業氣象
Journal Issue
9
Pages
49-54
Date Issued
2002
Date
2002
Author(s)
Abstract
本項試驗在臺中縣霧峰鄉行政院農委會農業試驗所農場進行，以盆栽莧菜植株淹水方式，探討不等天數淹水處现對莧菜植株生長及植體水分含量之影響，作爲避免淹水危害因應處理之參考。本試驗淹水處理天數6～10天不等，自收穫調查日往前計算，總計進行六次重複試驗。根據試驗結果，發現莧菜植株之葉片、莖桿及地上部植體的鮮重與乾重等性狀，均隨著淹水天數的增加而有重量遞減的現象。莧菜植株高度、葉面積、及葉片與地上部植體之相對水分含量，亦出現隨著淹水天數增加而降低的趨勢。此外，試驗亦發現，莧菜植體鮮痕與植體相對水分含量成正比。綜合試驗結果，顯示淹水將抑制莧菜生長，並因造成植體脫水現象而使淹水負面效應加劇。
Species of Amaranthus mangostanus L. (or A. tricolor L.) is a popular vegetable crop cultivated year-round in Taiwan. This study was conducted to investigate the effects of different waterlogging durations on plant growth and water content. The potted experiments were repeated 6 times with waterlogging durations from 0 (CK) to 10 days. Results indicated that fresh and dry weights of leaves，stem and aboveground plant parts were decreased with increasing days of waterlogging. Plant height, leaf area and relative water contents of leaves and aboveground plant parts were also reduced by increased days of waterlogging. It showed that fresh weight was positively correlated with relative water content in leaves, stem, and aboveground plant parts. Results suggest that waterlogging treatments inhibit plant growth and induce drying effect to plant parts with the negative impacts on the underlying mechanisms.
Subjects
淹水天數
淹水效應
莧菜
生長
植體水分含量
Days of waterlogging
Waterlogging effect
Amaranthus mangostanus
Plant growth
Plant water content
Publisher
中華農業氣象學會
Type
journal article
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