中国蔬菜 ›› 2014, Vol. 1 ›› Issue (1): 31-.

• 研究论文 • 上一篇    下一篇

不同铵硝配比对芥蓝伤流液组分及植株氮磷钾积累的影响

章笑赟, 祁百福, 宋世威, 刘厚诚, 孙光闻, 苏蔚, 陈日远   

  1. (华南农业大学园艺学院,广东广州 510642)
  • 收稿日期:2013-10-17 修回日期:2013-12-03 出版日期:2014-01-01 发布日期:2014-01-19
  • 通讯作者: 陈日远,男,教授,博士生导师,专业方向:蔬菜栽培生理及设施园艺生态生理,E-mail:rychen@scau.edu.cn;宋世威,男,副教授,硕士生导师,专业方向:蔬菜生理与分子生物学,E-mail:swsong@scau.edu.cn
  • 作者简介:章笑赟, 女, 硕士研究生, 专业方向: 蔬菜栽培生理,E-mail: safiyazhang@163.com
  • 基金资助:

    高等学校博士学科点专项科研基金项目(20114404120013),现代农业产业技术体系专项(CARS-25-C-04)

Effects of Different Ammonium and Nitrate Ratios on Chinese Kale Bleeding Sap
Component and Its Plant Nitrogen,Phosphorus and Potassium Accumulation

 ZHANG  Xiao-Bin, QI  Bai-Fu, SONG  Shi-Wei, LIU  Hou-Cheng, SUN  Guang-Wen, SU  Wei, CHEN  Ri-Yuan   

  1. (College of Horticulture,South China Agricultural University,Guangzhou 510642, Guangdong,China)
  • Received:2013-10-17 Revised:2013-12-03 Online:2014-01-01 Published:2014-01-19

摘要: 采用伤流液组分分析和植物营养分析的方法,探讨了不同铵硝配比(CK,0∶100;T1,10∶90;T2,25∶75;T3,50∶50)影响芥蓝生长的生理机制。结果表明:与全硝态氮营养液对照相比,3 个营养液增铵处理均提高了芥蓝植株的生物量和伤流强度,其中营养液增铵25%(T2)处理的效果最好。T1 处理芥蓝植株伤流液中蛋白态氮和P 的流量与CK 相比显著增加;T2 处理芥蓝植株伤流液中NO3--N、P、K 流量均为最高;T3 处理芥蓝植株伤流液中NH4+-N、氨基酸态氮和蛋
白态氮流量最高,而NO3--N 和K 流量则显著低于CK。T1 处理和T2 处理显著提高了芥蓝植株N、P、K 的含量和积累量;T3 处理亦显著提高了芥蓝植株N、P 的含量和积累量,但显著降低了K 的含量和积累量。综合来看,营养液适量增铵(25%)处理的效果最好,可以提高芥蓝根系吸收能力,促进氮代谢,增加植株对N、P、K 的吸收和积累,从而促进植株生长。

关键词: 铵硝配比, 芥蓝, 伤流液, 营养元素

Abstract: Abstract:In order to investigate the physiological mechanism of different NH4+/NO3- ratio(0∶100,10∶90,25∶75,50∶50)regulating the growth of Chinese kale(Brassica albograbra L.H.Bailey),exudate composition and plant nutrient were analyzed. The results showed that compared with the control(CK)treatment,the biomass and bleeding intensity were significantly improved by ammonium enhancement treatments,in which T2 treatment had the maximum value. T1 treatment increased soluble protein-N and P flux in bleeding sap significantly,compared with the control. T2 treatment had the highest flux of NO3--N,P,Kin bleeding sap. The highest flux of NH4+-N,free amino acid-N and soluble protein-N were found in T3 treatment,while each NO3--N and K flux was lower than that of the CK. Compared with CK,the concentration and accumulation of N,P and K were increased in T1 and T2 treatments,and the concentration and accumulation of K was reduced in T3 treatment. In conclusion,roots absorption capacity,nitrogen metabolism,and the uptake and accumulation of N,P,K were improved by appropriate enhancement(25%)of ammonium in nutrient solution,thereby plant growth was promoted.

Key words: NH4+/NO3- ratio, Chinese kale, Bleeding sap, Nutrient elements