利用天然冷源作為洋桔梗育苗之研究

The Research of Natural Cold Source Used to Produce Eustoma Grandiflorum Seedlings

葉育哲(Yu-Che Yeh) ； 蔡月夏(Yueh-Shiah Tsay)

《花蓮區農業改良場研究彙報》 28期 (2010/11) Pp. 9-19

https://doi.org/10.6957/RBHDAIS.201011.0009

摘要

以深層海水作為天然冷媒，經熱交換處理機可吹送出19－20℃的冷風供降溫育苗利用，在夏季高溫季節，可維持20坪的雙層塑膠布保溫溫室之室內日均溫為26.4℃。經深層海水冷源環境培育之洋桔梗種苗，於定植後除「Mirage Pastel Pink」晚生品種和「Platinum Violet」極晚生品種有簇生化情形發生外，其他品種皆無簇生化現象。洋桔梗不同品種間從春季定植至第一朵花開放日數以「Presto Blue Line」最短僅53天，花莖長為42.3公分，而「Platinum Violet」為最長需85天，但花莖長度最長可到64.5公分，其他品種在定植後58－65天可開花。應用海洋深層水冷源可生產無簇生化之優良洋桔梗種苗，但冷源溫室的位置若與熱交換器的距離太遠，則會造成冰水接引過程的冷源損失，降低了海洋深層水冷源的利用效率。

關鍵字

海洋深層水 ； 種苗 ； 節能 ； 簇生化 ； 降溫

並列摘要

Using deep ocean water (D.O.W.) as a natural refrigerant through high-efficiency plate heat exchanger can produce 19-20 ℃ cool wind to cool greenhouse for seedlings incubated. In the hot summer season, this system could maintain daily average temperature at 26.4 ℃ in 60 m^2 double plastic film greenhouse. In this experiment, results revealed that the rosette rate of late-blossom Lisianthus varieties 'Mirage Pastel Pink' and 'Platinum Violet' was 6% and 28% respectively after incubated in D.O.W. cooling house and planted in the field, in addition, the other cultivars showed no rosette phenomenon. Days from planting to blossom of Lisianthus 'Presto Blue Line' was shortest (53 days) and 'Platinum Violet' was longest (85 days), while other cultivars blossomed in 58-65 days after planting. The height of flower stems of 'Exrosa Pinkflash' was shortest (33.8 cm) and 'Platinum Violet' was tallest (64.5 cm). Non-rosette Lisianthus seedlings could be produced by using D.O.W. cooling system, but some could not. Because of the efficiency of D.O.W. cold source was decreased by the far distance between greenhouse and the heat exchanger.

並列關鍵字

deep ocean water ； seedling ； energy conservation ； rosette ； cooling