光质与钾浓度交互模式对紫叶生菜生长、营养与品质的影响  

Effects of Different Interaction Modes of Light Quality and Potassium Ion Concentration on Growth and Quality of Purple Lettuce

作　　者：林黄昉 庄团达 申宝营[1] 林碧英[1] LIN Huangfang;ZHUANG Tuanda;SHEN Baoying;LIN Biying(College of Horticulture,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Social Affairs Service Center of Luoyang Town,Huian County,Quanzhou Fujian 362104,China)

机构地区：[1]福建农林大学园艺学院,福州350002 [2]惠安县洛阳镇社会事务服务中心,福建泉州362104

出　　处：《西北农业学报》2024年第12期2295-2305,共11页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：福建农林大学“乡村振兴服务团队”支持计划项目(11899170126);福建农林大学科技创新专项基金(CXZX2020141C)。

摘　　要：为探究光质与钾浓度交互对紫叶生菜生长、品质的影响,进而筛选紫叶生菜最适光质与钾浓度交互模式。试验以‘紫罗马’紫叶生菜为试验材料,以白色荧光灯(L1)为对照,另设3种LED光质处理;同时基于Hoagland营养液配方,设置6个钾浓度处理,共24个处理。光质处理30 d后采收并测定紫叶生菜生物量、营养及品质相关指标。结果表明,不同光质与钾浓度交互模式对紫叶生菜生长、营养与品质存在一定影响。(1)生长方面,不同光质与60、90、120、150μg·mL^(-1)钾浓度交互时,对地上部鲜质量(产量)与根系总长提升效果较优者均为红光。不同钾浓度与红光、蓝光、红蓝复合光交互时,对产量、叶面积、根系总长提升效果较佳者为150μg·mL^(-1)钾浓度。而不同光质与钾浓度交互模式下,红光与150μg·mL^(-1)钾浓度交互对产量提升效果最佳,较同钾浓度的白光处理提高59.52%;蓝光与150μg·mL^(-1)钾浓度交互对株高、叶面积及根系生长存在促进作用,综合效益最佳。较同钾浓度的白光处理,蓝光与150μg·mL^(-1)钾浓度交互模式株高、叶面积、地下部鲜质量与根体积分别提高27.94%、49.06%、78.74%、169.35%。(2)营养与品质方面,不同光质与60、90、120μg·mL^(-1)钾浓度交互时,提高可溶性蛋白与可溶性糖含量效果较佳者为红光;与150、180μg·mL^(-1)钾浓度交互,各光质均可提高维生素C含量并降低硝酸盐含量。而不同钾浓度与白光、蓝光、红蓝复合光交互时,提高可溶性糖与维生素C含量效果较佳者均为150μg·mL^(-1)钾浓度。而不同光质与钾浓度交互模式下,蓝光与150μg·mL^(-1)钾浓度交互对品质指标综合提升效果最佳。较同钾浓度的白光处理,蓝光与150μg·mL^(-1)钾浓度交互模式的可溶性糖、可溶性蛋白与维生素C含量分别提高158.53%、14.07%、8.05%;而对光合色素与花青素提升效果最佳的分别为红蓝光与120μg·Light quality and potassium ion concentration play an important role in plant growth and development.In order to explore the effect of the interaction between light quality and potassium concentration on the growth and quality of purple lettuce,the optimal interaction mode of light quality and potassium concentration was determined.The experiment used‘violet romana’purple leaf lettuce as the test material,white fluorescent lamp(L1)as the control,three LED light quality treatments were set up.Based on the Hoagland nutrient solution formula,six potassium concentration treatments were also set up,with a total of 24 treatments.After light quality treatment,30 days after harvesting,the biomass and nutrition and quality indexes of purple leaf lettuce were determined.The results showed that different modes of interaction between light quality and potassium concentration had a certain effect on the growth,nutrition and quality of purple lettuce.(1)In terms of growth,when different light qualities interacted with 60,90,120,150μg·mL^(-1)potassium concentrations,the ones with better effect on the fresh mass(yield)of the aboveground and the total length of the root system were all red light.When different potassium concentrations interacted with red,blue and red-blue composite light,a potassium concentration of 150μg·mL^(-1)was most effective for increasing yield,leaf area and total root length.In the interaction mode of different light quality and potassium concentration,the interaction between red light and 150μg·mL^(-1)potassium concentration had the best effect on yield improvement,which was 59.52%higher than that of white light treatment with the same potassium concentration.The interaction between blue light and 150μg·mL^(-1)potassium concentration promoted plant height,leaf area and root growth,and the comprehensive benefits were the best.Compared with the white light treatment with the same potassium concentration,the plant height,leaf area,underground fresh mass and root volume of blue light and 150μg·

关 键 词：钾浓度 光质 交互模式 紫叶生菜 生长 品质 

分 类 号：S636.2[农业科学—蔬菜学]