温室多层立体栽培联合补光对生菜产量及品质的影响

针对温室单层栽培模式空间利用率低,资源浪费的问题,以阿奎诺生菜为研究对象,探究温室多层立体栽培结合人工补光模式对生菜产量、品质及电能利用率的影响.试验结果表明:栽培架中层和下层补光处理能显著提高生菜总干物质量.中、下层补光处理下,每增加1％日光照累积量(Daily light integral,DLI),单位面积产量分...

Effects of multi-layer three-dimensional cultivation combined with artificial lighting on lettuce yield and quality in Greenhouse

To improve space utilization efficiency and save resource in greenhouse with single-layer cultivation system, taking Aquino lettuce as the research object, the effects of greenhouse combined with three-layer cultivation and artificial light supplement on lettuce yield, quality and power utilization rate were studied. The results showed that the total dry matter quality of lettuce could be significantly improved by increasing lighting on the middle-layer and down-layer. Under the treatment of middle-layer and down-layer with artificial light, the yield per unit area respectively increased by 0. 6% and 0. 8% with the increase of 1% DLI(Daily light integral). The specific leaf areas(SLAs)of both middle-layer of down-layer with artificial light and up-layer without artificial light were all smaller than that of middle-layer and down-layer without artificial light, that is, their leaves were thicker. The photosynthetic capacity and the formation of photochemical components of leaves grown under high light intensity were significantly promoted. The total sugar content and chlorophyll content in leaves under supplemental light treatment were higher than those without light supplement treatments. Although the power consumption was increased, the lettuce yield was also significantly increased. The input/output value of light supplement treatments were 0. 08-0. 09 kW·h/g. It was significantly higher than that of 0. 2-0. 3 kW·h/g in the middle and lower layers without artificial light, and the space utilization tripled after adopting three-layer cultivation system in greenhouse.