LED光照强度对紫叶生菜幼苗的影响  

Effects of LED Light Intensity on Purple Leaf Lettuce Seedlings

作　　者：代绿叶 张鑫 滕英姿 顾益银 陈丽[1] 孔小平 韩莹琰[1] DAI Lvye;ZHANG Xin;TENG Yingzi;GU Yiyin;CHEN Li;KONG Xiaoping;HAN Yingyan(Beijing Key Laboratory of New Technology in Agricultural Application/National Demonstration Center for Experimental Plant Production Education/College of Plant Science and Technology,Beijing University of Agriculture,Beijing 102206;Xining Vegetable Technology Service Center,Xining 810003)

机构地区：[1]农业应用新技术北京市重点实验室/植物生产国家级实验教学示范中心/北京农学院植物科学技术学院,北京102206 [2]西宁市蔬菜技术服务中心,西宁810003

出　　处：《中国农学通报》2023年第10期24-30,共7页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金项目(32172607);北京市自然科学基金项目(22JF0014)。

摘　　要：为探究适合植物工厂和温室中紫叶生菜幼苗生长的光照强度,以‘北紫生3号’为试验材料,在光质为白光不变的条件下,研究6000、12000、18000、24000、30000 lx 5种光照强度对紫叶生菜幼苗生长形态、营养品质、光合色素和光合特性的影响。结果表明,在30000 lx的光照强度下,紫叶生菜幼苗生长良好并且生物量、叶绿素a含量、叶绿素b含量、类胡萝卜素含量、叶绿素总量、可溶性蛋白含量、可溶性糖含量、维生素C含量、花青素含量、净光合速率、蒸腾速率、气孔导度最大,硝酸盐含量和胞间CO_(2)浓度最低,但叶绿素b、类胡萝卜素、可溶性蛋白含量和蒸腾速率与24000 lx的光照强度相比无显著性差异,且株高在24000 lx的光照强度下最高。在光质为白光的条件下,最适宜紫叶生菜幼苗生长的光照强度为30000 lx。To explore the light intensity suitable for the growth of purple leaf lettuce seedlings in plant factories and greenhouses,the effects of light intensity of 6000,12000,18000,24000 and 30000 lx on growth morphology,nutritional quality,photosynthetic pigment and photosynthetic characteristics of purple leaf lettuce seedlings were studied with‘Beizisheng 3’as the experimental material under the condition of white light quality unchanged.The results showed that under the light intensity of 30000 lx,purple leaf lettuce seedlings grew well and the biomass,chlorophyll a content,chlorophyll b content,carotenoid content,total chlorophyll,soluble protein content,soluble sugar content,vitamin C content,anthocyanin content,net photosynthetic rate,transpiration rate and stomatal conductance were the largest,while the nitrate content and intercellular CO_(2)concentration were the lowest.However,chlorophyll b content,carotenoid content,soluble protein content and transpiration rate had no significant difference compared with those under 24000 lx light intensity,and the plant height was the highest under 24000 lx light intensity.Under the condition of white light quality,the most suitable light intensity for the growth of purple leaf lettuce seedlings is 30000 lx.

关 键 词：光照强度 紫叶生菜幼苗 生长形态 营养品质 光合色素 光合特性 

分 类 号：S636.2[农业科学—蔬菜学]