冬春季节育苗温室补光光强对黄瓜幼苗质量的影响  

Effect of Supplementary Light Intensity on Quality of Winter-spring Cucumber Seedling in Solar Greenhouse

作　　者：肖苏琪 王冰华 曲梅 高丽红 XIAO Su-qi;WANG Bing-hua;QU Mei;GAO Li-hong(College of Horticulture,China Agricultural University,Beijing Key Laboratory of Growth and Development Regulation for Protected Vegetable Crops,Beijing 100193,China)

机构地区：[1]中国农业大学园艺学院,设施蔬菜生长发育北京市重点实验室,北京100193

出　　处：《中国蔬菜》2018年第10期40-45,共6页China Vegetables

基　　金：国家重点研发计划项目(2016YED0201003),现代农业产业技术体系大宗蔬菜项目(CARS-23),北京市果类蔬菜产业创新团队资助项目(BAIC01)

摘　　要：在幼苗子叶展平期至两叶一心期进行不同补光光强处理(50、100、150、200μmol·m^(-2)·s^(-1)),研究不同补光光强对日光温室冬春茬黄瓜幼苗质量的影响。结果显示,补光有效降低了幼苗的下胚轴长度和株高,但显著增加了茎粗、叶面积、比叶重、干物质含量、壮苗指数等指标。而且补光促进干物质向叶片和根部分配,抑制向茎部分配。另外,补光下幼苗的叶绿素、类胡萝卜素和淀粉含量明显高于对照,但可溶性糖含量均低于对照。以壮苗指数作为评判补光优劣的标准,T(100)、T(150)、T(200)处理显著优于对照和T(50)处理,从经济、节能等方面综合考虑,推荐补光光强为100μmol·m^(-2)·s^(-1)。Taking the winter-spring season cucumber seedlings in the solar greenhouse as experimental material,this paper studied the effects of different supplementary light intensities on the quality of cucumber seedlings.The results showed that the light treatment could effectively reduce the seedling hypocotyl length and plant height,but significantly increase the stem diameter,leaf area,specific leaf weight,dry matter content,and strong seedling index.Moreover,supplementary light could facilitate the distribution of dry matter to leaves and roots,while restrain to stems.In addition,the contents of chlorophyll,carotenoid and starch in seedlings under supplemented light were higher than those of the control,but the soluble sugar content was lower than that of the control.Taking the strong seedling index as criterion of good and bad supplementary treatment,it could be seen that T(100),T(150),and T(200)treatments were significantly superior to the control and T(50)treatment.Thinking comprehensively from the aspects of economy and energy-saving,we recommend supplementary light intensity as 100μmol·m-2·s-1.

关 键 词：日光温室 冬春茬 幼苗质量 补光光强 

分 类 号：S626[农业科学—园艺学] S642.2