Study on the growth characteristics of cutting lettuce under different lighting conditions inside the carbon container-like plant factory with artificial lights
| Autor: | Liang,Jui-Kai, 梁瑞凱 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 The aim of this thesis is to investigate the LED light quantity on the lettuce growth conditions within a cabin-like plant factory. There are six different LED lamps with light spectrum and intensity. The open and close time of LED lamps is controlled as 14 to 10 hours. The deep water hydroponic cultivation system is employed and the target plant is lettuce. The chemical composition of nutrition is based on Taichung Distric Agricultural Research and Extension Station suggested. All measures are performed in a fixed micro-environment but changed the light conditions for six cultivated beds. The fresh weight, number of leafs, total leaf area, and ionic concentrations of lettuce are detected during growth period for further analysis. Results indicated that the micro-environment factors, such as air temperature, relative humidity and CO2 concentration, and pH as well as EC values are along an acceptable trend during lettuce growth. The LED light spectrum with more portion of 740 nm red light results in a significant enhancement in biomass of lettuce for present work. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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