光质对西瓜幼苗生长及光合特性的影响

以西瓜（Citrullus lanatus L.）品种青峰为试验材料，在人工光植物工厂育苗条件下，研究光质对西瓜幼苗的生长及光合特性的影响，探索提高育苗质量、缩短育苗周期的高效人工光质环境。结果表明：与传统育苗光源荧光灯（CK）相比，光质5R/4B/1Y（红光150 μmol·m^-2·s^-1，蓝光120μmol·m^-2·s^-1，黄光30μmol·m^-2·s^-1）处理下的西瓜幼苗矮壮、茎粗增大，叶绿素含量、净光合速率和壮苗指数均显著高于对照，表现出较佳的育苗优势，可推荐作为西瓜人工光育苗较优的光质配方。

Effects of Light Quality on Growth and Photosynthetic Characteristics of Watermelon Seedlings

Taking watermelon（Citrullus lanatus L.） variety ‘Qingfeng’ as experimental material，thispaper studied the effect of light quality on watermelon seedling growth and photosynthetic characteristics underconditions of artificial-light plant factory，and investigated high efficient artificial-light quality environmentfor improving seedling quality and shortening nursing seedling period．The results showed that comparing withthe traditional light source fluorescent lamp（CK），the light quality 5R/4B/1Y （red light 150 μmol·m^-2·s^-1，blue light 120μmol·m^-2·s^-1，yellow light 30μmol·m^-2·s^-1） had better advantage for nursing seedling．Under5R/4B/1Y treatment the watermelon seedling was stumpish with thick stem．The chlorophyll content，netphotosynthetic rate and the strong seedling index were significantly higher than that of the CK．So，5R/4B/1Ycan be recommended as a better light quality recipe for artificial-light nursing seedling of watermelon.