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|標題:||Effects of Irrigation Water Temperature on the Growth of Tomato Seedlings
|關鍵字:||Cold water;冷水;Leaf temperature;Soil temperature;Seedling index;Tomato;葉溫;土溫;壯苗指數;番茄||Project:||興大園藝, Volume 29, Issue 4, Page(s) 43-56.
Horticulture NCHU, Volume 29, Issue 4, Page(s) 43-56.
In this study,‘Hwalien Yasu No.5'tomato was used to study the effects of different temperatures of irrigation water, parts of plant, timing of irrigation on the shortening and quality of plg-seedling. The purposes of this study were to establish the cold-water irrigation system for plug-seedlings production, and to provide the basic knowledge of shortening seedling for advanced study.
The results indicated that shortest seedling was found in the seeding irrigated with the lowest (5∘C) or highest (65∘C) water temperature.However, highest stem strength and seedling index was only found in the seedling irrigated with the 5∘C water. Decrease in the length of first internode was primary responsible for the shortening seedling by cold-water irrigation.Irrigation of cold water at the morning (8:00) or evening (16:00) showed the best results in shortening seedling. After the cold water irrigation, the soil temperature drop to minimum within 60 to 90 sec, and recovered to the room temperature after 60 min. Longer period of cold-water irrigation and lower the cold-water temperature resulted shorter the seedlings. In conclusion, cold-water irrigation system for plug-seedlings production could apply in the commercial usages.
|Appears in Collections:||園藝學系|
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