LED燈源電照用於抑制菊花開花之研究

Effects of LED Light Sources on the Flower Inhibition of Chrysanthemum

許謙信(Chian-Shinn Sheu)

《臺中區農業改良場研究彙報》 119期 (2013/06) Pp. 53-63

摘要

試驗以LED10R（10W紅光）、7R3B（7W紅光混合3W藍光）、5R5B（5W紅光混合5W藍光）、5R2B（5W紅光混合2W藍光）及23W 110V、23W 220V黃光省電燈泡為對照進行照度量測。燈泡之架設高度為1.8 m，量測燈下及燈下不同水平距離之照度。10R（10W紅光）的照度高於7R3B（7W紅光混合3W藍光），更高於5R5B（5W紅光混合5W藍光）。藍光對照度之貢獻度遠不及紅光。10R於燈下之照度高於23W 110V或23W 220V黃光省電燈泡，但是在燈下水平距離2.5 m處，則10R之照度低於23W 110V及23W 220V。於3 m邊長之正方形4頂角架設燈泡，並於夜間10pm～2am電照4小時。不同燈泡下之「芬蘭小粉」到花日數，10R於燈泡正方形中心點為54日。其餘燈泡正方形中心點則為47～51日，相差為3～7日。「白天星」之到花日數則在42日至44日之間，其10R之紅光抑制開花之效果仍比其他各組佳，其次為23W 220V省電燈泡及LED 7R3B。「黃精競」之到花日數，亦以10R之結果最好，其次為23W 110V及23W 220V省電燈泡。

關鍵字

菊花 ； 光週期 ； 暗期中斷 ； 光質

並列摘要

LED lights 10W red (10R), 7W red with 3W blue (7R3B), 5W red with 5W blue (5R5B) and 5W red with 2W blue (5R2B) were tested for flowering inhibition of Chrysanthemum. The 23W 110V and 23W 220V yellow energy saving blubs were used as control. The height of light installation was 180 cm. Light intensity of 10R was higher than 7R3B and 5R5B. The input of light intensity of blue light was less than red light. Light intensity on ground under the 10R LED was higher than 23W 110V and 23W 220V blubs, while less than same blubs at the 250 cm away in horizontal. Light bulbs were installed on the 4 corners of a 3 m square and lighting was setup from 10 pm to 2 am. For variety ”Fen-Lan-Xiou-Fen”, days to flowering of square center of 10R treatment was 54 days, while was 47 - 51 days of the other bulb treatments. For variety Bai-Tein-Xin, days to flowering was from 42 - 44 and the inhibition efforts of 10R treatment was better than others. For variety ”Huang-Gin-Gin”, it was similar with the other two varieties. The result of 10R was the best.

並列關鍵字

Chrysanthemum ； photoperiod ； night-break ； light quality ； LED