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氮素营养对药用菊花氮代谢及产量品质的影响

李丽,王康才**,李柯妮,张朋,段云晶   

  1. (南京农业大学园艺学院, 南京 210095)
  • 出版日期:2015-12-10 发布日期:2015-12-10

Effects of nitrogen nutrition form on nitrogen metabolism, yield and quality of Chrysanthemum morifolium. 

LI Li, WANG Kang-cai**, LI Ke-ni, ZHANG Peng, DUAN Yun-jing   

  1. (College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China)
  • Online:2015-12-10 Published:2015-12-10

摘要: 采用盆栽试验,以药用菊花为供试材料,选用酰胺态氮\[CO(NH2)2-N\]、硝态氮(NO3--N)和铵态氮(NH4+-N)为供试氮肥,分别设定3个氮素水平,采用L9(3-4)正交设计,研究氮素营养对药用菊花氮代谢、产量和品质的影响。结果表明:氮素形态对药用菊花氮代谢、产量和品质的影响存在较大差异。酰胺态氮和硝态氮混合施用时药用菊花单株花序干重最大,铵态氮对菊花叶片NR活性、游离氨基酸、可溶性蛋白以及花序中绿原酸含量的影响较大,酰胺态氮对菊花叶片GS活性和花序中总黄酮含量的影响大于铵态氮和硝态氮,硝态氮对菊花花序木犀草苷含量的影响最大;处理5即施酰胺态氮1.5 g·pot-1、铵态氮1.5 g·pot-1、硝态氮3.0 g·pot-1、总氮量6.0 g·pot-1时,菊花花序中3,5-O-双咖啡酰基奎宁酸含量高于缺氮处理近1倍。可见,氮素营养可提高药用菊花氮代谢关键酶活性和氮代谢产物,提高药用菊花成分含量和单株花序干重。

关键词: PM2.5, 滞尘服务, 海淀区, 模拟, 绿色空间

Abstract: In order to study the effects of nitrogen nutrition form on the nitrogen metabolism, yield and quality of Chrysanthemum morifolium, a pot experiment was carried out in the greenhouse of Nanjing Agricultural University. Three nitrogen forms of amide nitrogen \[CO(NH2)2-N\], ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) with three levels were applied with orthogonal design L9(3-4). The results showed that nitrogen metabolism, yield and quality of C. morifolium were significantly influenced by the nitrogen forms. The inflorescence yield reached its maximum when applying amide nitrogen and nitrate nitrogen in mixture. The effects of ammonium nitrogen on NR activity and the contents of free amino acid and soluble protein in the leaves and chlorogenic acid in the flowers were higher than those of the other two nitrogen forms. In addition, the effects of amide nitrogen on GS activity in the leaves and flavonoids content were higher than those of ammonium nitrogen and nitrate nitrogen. Nitrate nitrogen had a significant influence on the content of mignonette glycosides in the flowers of C. morifolium. The content of 3,5-O-dicoffeoylqunic acid of treatment 5 (1.5 g·pot-1 amide nitrogen, 1.5 g·pot-1 ammonium nitrogen and 3.0 g·pot-1 nitrate nitrogen) was almost one time higher than that in the Ndeficiency treatment. In a word, proper forms of nitrogen nutrition could not only improve the content of metabolic products and the activities of key enzymes of C. morifolium, but also improve its yield and quality.

Key words: simulation, Haidian District., PM2.5, dust detention service, green space