以荧光灯为对照,研究不同配比红蓝LED 光处理[包括100% 红光、75% 红光-25% 蓝光(R31)、50% 红光-50%蓝光(R11)、25%红光-75%蓝光(R13)和100% 蓝光]对黄瓜(Cucumis sativus Linn.)果实性状、产量及营养品质的影响。结果表明:100%红光处理组黄瓜植株生长缓慢,果实发育异常,果实单株产量及VC、可溶性糖和可溶性蛋白质的含量均低于其他处理组。100%蓝光处理组的果实发育正常,果实单株产量显著低于红蓝LED 光组合处理组,而果实中可溶性糖、蔗糖、游离氨基酸和可溶性固形物的含量总体上显著高于其他处理组,可溶性蛋白质含量也较高。R31 处理组黄瓜果实的单果鲜质量显著高于其他处理组;R31 和R11 处理组的果实单株产量显著高于其他处理组,R11 处理组的黄瓜果实中VC和可溶性蛋白质含量明显高于其他处理组。上述研究结果显示:黄瓜果实的单株产量和营养品质受红蓝光协同作用的影响,设施栽培黄瓜生产的较适宜光照比例为50%红光-50%蓝光。

Taking fluorescent lamp as the control, effect of different proportions of red and blue LED lights [including 100% red light, 75% red light-25% blue light (R31), 50% red light-50% blue light (R11), 25% red light -75% blue light ( R13) and 100% blue light]on traits, yield and nutritional quality of fruit of Cucumis sativus Linn. were researched. The results show that in the treatment group of 100% red light, seedling of C. sativus grows slowly, development of fruit is abnormal, and yield per plant and contents of VC, soluble sugar and soluble protein in fruit are lower than those in other treatment groups. In the treatment group of 100% blue light, development of fruit is normal, fruit yield per plant is significantly lower than that in the combined treatment groups of red and blue LED lights, while contents of soluble sugar, sucrose, free amino acids and soluble solid in fruit are generally significantly higher than those in other treatment groups, and soluble protein content is also high. Fresh weight per fruit of C. sativus in R31 treatment group is significantly higher than that in other treatment groups, fruit yield per plant in R31 and R11 treatment groups is significantly higher than that in other treatment groups, and also, contents of VC and soluble protein in fruit in R11 treatment group are significantly higher than those in other treatment groups. It is suggested that yield per plant and nutritional quality of fruit of C. sativus is affected by synergistic effect of red and blue lights, and more suitable light proportion for culturing C. sativus in greenhouse is 50% red light-50% blue light.