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以四季油麦菜为试材,以日光灯(白光)为对照,研究了LED蓝光(B)和红蓝组合光(RB,R∶B=1∶1)对生菜幼苗生长的影响。结果表明:红蓝组合光有利于培育壮苗;红蓝组合光处理的生菜幼苗株高、主根长、茎粗、鲜重、干重和叶面积均显著的高于对照;蓝光处理的株高显著的低于对照;蓝光和红蓝组合光均提高了壮苗指数,且红蓝组合光与对照的差异达显著水平。
The effects of LED blue light (B) and red-blue combined light (RB, R: B = 1: 1) on the growth of lettuce seedlings were studied by using four-seasoned lettuce as test material and fluorescent lamp (white light) as control. The results showed that the combination of red and blue light was good for nurturing strong seedlings. The seedling height, main root length, stem diameter, fresh weight, dry weight and leaf area of lettuce seedlings treated with red and blue light were significantly higher than those of the control. The plant height Significantly lower than the control; Blue and red and blue combination of light were increased seedling index, and red and blue light and the difference between the control group reached a significant level.