氮质量浓度对盆栽小菊‘东篱秋心’干物质和养分吸收的影响  

Effect of nitrogen mass concentration on dry matter and nutrient uptake of potted chrysanthemum ’Dong Li Qiu Xin’

作　　者：邱丹丹 杨秀珍 董南希 李清清 戴思兰 QIU Dandan;YANG Xiuzhen;DONG Nanxi;LI Qingqing;DAI Silan(College of Landscape Architecture/Beijing Key Laboratory of Ornamental Plants Germplasm Innovation&Molecular Breeding/National Engineering Research Center for Floriculture/Beijing Laboratory of Urban and Rural Ecological Environment,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学园林学院/花卉种质创新与分子育种北京市重点实验室/国家花卉工程技术研究中心/城乡生态环境北京实验室,北京100083

出　　处：《中国农业大学学报》2021年第9期84-91,共8页Journal of China Agricultural University

基　　金：中国传统菊花新品种培育与产业化关键技术研究(Z191100008519002)。

摘　　要：为探究氮质量浓度对盆栽小菊(chrysanthemum×morifolium Ramat.)干物质以及养分吸收的影响,以采取科学合理的施肥方案。本研究以盆栽小菊’东篱秋心’为研究对象,以珍珠岩为栽培基质,设置不同氮质量浓度处理(40、120、180、240和350mg/L)进行盆栽试验,统计分析各处理的干物质质量、养分含量、氮累积量和氮吸收效率等。结果表明:在240mg/L氮处理下,’东篱秋心’生长最好,花、叶和全株干物质质量最大,且与180mg/L氮处理差异不显著,根冠比随氮质量浓度提高呈减小趋势,各器官氮含量和累积量均在350mg/L氮处理下最大,花磷含量在240mg/L氮处理下最大,花、叶和茎钾含量均在40mg/L氮处理下最大,氮吸收效率和氮肥偏生产力均随氮质量浓度提高而减小。综合考虑,氮质量浓度为180~240mg/L,对应的氮施用总量为270~360mg/株,可作为该品种氮肥施用量参考值。The aim of this study was to explore the effects of nitrogen mass concentration on dry matter and nutrient uptake of potted chrysanthemum,and find a scientific fertilization scheme.Taking’Dong Li Qiu Xin’as the test object and perlite as the cultivation medium,an experiment was conducted with different nitrogen mass concentrations(40,120,180,240 and 350 mg/L).Dry matter mass,nutrient content,N accumulation,N uptake efficiency,etc.were analyzed.The results showed that:At 240 mg/L nitrogen mass concentration,’Dong Li Qiu Xin’grew better,and the dry matter mass of flower,leaf,and whole plant were the largest,and there were no significantly differences compared with 180 mg/L nitrogen mass concentration.The root-shoot ratio decreased with the increase of nitrogen mass concentration.The N content and accumulation rate of each organ was the largest at 350 mg/L.The P content of flower was the largest at 240 mg/L.The K content of flower,leaf,and stem were the largest at 40 mg/L.N uptake efficiency and partial factor productivity decreased with the increase of nitrogen mass concentration.In summary,180-240 mg/L nitrogen mass concentration,and the corresponding nitrogen application rate of 270-360 mg/plant can be used as the reference of nitrogen application rate for this variety.

关 键 词：氮质量浓度 盆栽小菊 干物质 氮磷钾养分 

分 类 号：S682.11[农业科学—观赏园艺]