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題名 | 灌溉量對甘藍及番茄穴盤苗生育之影響=Influence of Water Supply on Plug Seedlings of Cabbage and Tomato |
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作者 | 孫永偉; Sun, Yung-wei; |
期刊 | 植物種苗 |
出版日期 | 19990700 |
卷期 | 1:2 民88.07 |
頁次 | 頁131-140 |
分類號 | 435.2 |
語文 | chi |
關鍵詞 | 灌溉; 蒸發散量; 壯苗指標; 作物缺水指數; Irrigation; Evapotranspiration; Seedling index; Crop water stress index; |
英文摘要 | The objectives of this research were to study the effects of water supply to structure of cabbage (Brassica oleracea L. Capitata group) and tomato (Lycopersicon esculentum Mill.) seedling on plug system, and to study relationships between water supply and evapotranspiration rate with temperature in greenhouse. The results indicated that cabbage plug seedlings grew slowly and required much more water than tomato. Media water content maintained in the range of 160-260% for cabbage seedlings resulted in good plant height, shoot and root dry weight, and survival rate. Plant height, shoot and root dry weight can be used as seedling index of cabbage seedlings. Media water content at 130-180% was more effective for tomato seedlings. The ratio of shoot dry weight and plant height could be used as a proper seedling index of tomato seedlings. A positive correlation existed between irrigation and evapotranspiration. The ratio of accumulated evapotranspiration and accumulated irrigation showed a relative high evapotranspiration in low irrigation. There was a positive correlation between temperature of greenhouse and evapotranspiration of irrigation treatments. The temperature data recorded in greenhouse can be used to predict evapotranspiration of plug seedlings. |
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