不同光源对4种蔬菜幼苗生长发育的影响

为了解不同光源或光源组合对茄子、辣椒、番茄、黄瓜幼苗生长发育的影响,基于4种基本光源,以白光为对照,比较分析了不同光源处理下蔬菜幼苗植株的壮苗指数、叶片数、叶面积、根系活力和花蕾大小。结果表明:红蓝光源有利于提高4种蔬菜幼苗的壮苗指数;茄子、辣椒、番茄和黄瓜叶片数分别在黄光或4白2红2黄、2白4红2黄、红蓝光和黄光光源下最多;茄子、番茄和黄瓜幼苗的叶面积在红蓝光源下最大,而辣椒幼苗在红光光源下叶面积最大;茄子、辣椒、番茄和黄瓜根系活力分别在白光、4白2红2黄、红蓝光和2白4红2黄光源下最强;红光、黄光和红蓝光源可在一定程度上分别促进辣椒、番茄和黄瓜幼苗的提前现蕾开花,尤以红蓝光源效果最为明显。对番茄、茄子、辣椒和黄瓜育苗来说,最好的补光选择为红蓝光源,其次分别为黄光光源、白光光源、4白2红2黄光源和红光光源。

Effects of Different Light Sources on Growth and Development of Four Vegetables Seedlings

Abstract: In order to understand the effects of different light sources or combinations of light sources on the growth and development of eggplant, pepper, tomato and cucumber seedlings, based on four basic light sources and taking white light as the control, the seedling index, leaf number, leaf area, root activity and fl ower bud size of vegetable seedlings under different light sources were compared and analyzed. The results showed that the red and blue light source was benefi cial to improve the seedling index of four kinds of vegetable seedlings. The number of leaves of eggplant, pepper, tomato and cucumber was the most under eggplant, tomato and cucumber seedlings was the largest under red and blue light source, while that of pepper seedling was the largest under red light source. Eggplant, pepper, tomato and cucumber had the strongest root activity under white light, 4W2R2Y, red and blue light and 2W4R2Y light sources, respectively. To a certain extent, red light, yellow light, red and blue light source could promote the early budding and fl owering of pepper, tomato and cucumber seedlings, respectively, especially the effect of red and blue light source was the most obvious. Therefore, for tomato, eggplant, pepper and cucumber seedlings, the best light source was red and blue light source, while the second choice was yellow light source, white light source, 4W2R2Y light source and red light source respectively.