This research aimed to investigate the effects of three LED spectra on growth, gas exchange, antioxidant activity and nutritional quality of three vegetable species. The compressible vegetable facilities (CVF) were developed and three kinds of typical LED lights (spectra) were set, including white LED light (W), red-blue-green LED light (RBG), and red-blue-white LED light (RBW). Three vegetable species, i.e. lettuce (Lactuca sativa L. cv. Rome), cherry radish (Raphanus sativas L. cv. Hongxin) and cherry tomato (Lycopersicon esculentum M. cv. Mosite), were chosen and grown (matrix culture) in the three LED lights for 40, 40 and 100 days, respectively. The results indicated that the vegetable plants grew well and were compact in the RBG and RBW treatments. There was the highest biomass or fruit (tomato) in the RBG treatment and the least one in the W treatment for three vegetable species. There were no significant differences in harvest index, ratio of shoot to root, and water content among three treatments. The production efficiency values of 9.0-9.7, 9.9-13.5 and 11.8-12.5 g DW d⁻¹ m⁻² for lettuce, radish and tomato plants in the RBG and the RBW treatments were higher than those in the W treatment. The photosynthetic and transpiration rates of three vegetable species in the RBG treatment were the highest among three treatments and the W treatment had the least one. There were significant effects of three spectra on antioxidant activities of three vegetable species. Higher PPFD percentages of blue in the RBG light and the RBW light increased the antioxidant activities of all vegetable plants compared the W light. But it had no significant difference between the RBG light and the RBW. The organic components including soluble sugar (SS) and protein (Prt) of lettuce and radish plants were affected significantly by three spectra, but not for tomato plants. The contents of Mg and Zn of radish plants in the RBG treatment were higher than those in other treatments. There were significant positive effects of RBW treatment on the contents of N and Mg of tomato plants. The different spectra did not affect the contents of N-NO₃ and Cu of vegetable plants. This study demonstrated that the RBG light (spectrum) significantly enhanced the growth, gas exchange, antioxidant activity of the lettuce, radish, and tomato cultivars used in this study, and there are significant effects of different LED spectra on the nutritional quality (including organic components and several mineral elements) of the different species.

这项研究旨在研究三种LED光谱对三种蔬菜的生长，气体交换，抗氧化活性和营养品质的影响。开发了可压缩蔬菜设施（CVF），并设置了三种典型的LED灯（光谱），包括白光LED灯（W），红蓝绿LED灯（RBG）和红蓝白LED灯（光谱）。 RBW）。三种蔬菜种类，即生菜（罗马莴苣），樱桃萝卜（红景天萝卜）和樱桃番茄（番茄）M.简历 选择Mosite），并在三个LED灯中分别生长40天，40天和100天（基质培养）。结果表明，在RBG和RBW处理下，蔬菜植物生长良好且紧凑。在三种蔬菜中，RBG处理的生物量或果实（番茄）最高，而W处理的生物量或水果（番茄）最少。三种处理之间的收获指数，枝根比和水分含量无显着差异。生产效率值为9.0-9.7、9.9-13.5和11.8-12.5 g DW d ^-1 m ^-2在生菜中，RBG和RBW处理的萝卜和番茄植株均高于W处理。在三种处理中，RBG处理中三种蔬菜的光合和蒸腾速率最高，而W处理则最少。三个光谱对三种蔬菜的抗氧化活性有显着影响。与W灯相比，RBG灯和RBW灯中较高的蓝色PPFD百分比提高了所有蔬菜植物的抗氧化活性。但是，RBG灯和RBW之间没有显着差异。生菜和萝卜植物的有机成分包括可溶性糖（SS）和蛋白质（Prt）受到三个光谱的显着影响，而番茄植物则不受此影响。RBG处理的萝卜植株的Mg和Zn含量高于其他处理。RBW处理对番茄植株的氮和镁含量有显着的积极影响。不同的光谱不会影响N-NO的含量₃和蔬菜植物铜。这项研究表明，RBG光（光谱）显着增强了该研究中使用的莴苣，萝卜和番茄品种的生长，气体交换，抗氧化活性，并且不同的LED光谱对营养品质（包括有机食品）具有显着影响。成分和几种矿物质元素）。