Chinese Journal of Rice Science ›› 2011, Vol. 25 ›› Issue (5): 501-507.DOI: 10.3969/j.issn.10017216.2011.05.008

• Research Papers • Previous Articles     Next Articles

Effects of Nitrogen Fertilizer Level on  Chlorophyll Fluorescence Characteristic in Flag Leaf of Super Hybrid Rice at Late Growth   Stage

 LONG    Jirui1, MA   Guohui 1,* , WAN    Yizhen 1, SONG   Chunfang1, SUN   Jian2   

  1. 1 State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China; 2 Agricultural Technology Popularity Center of Yong′an Town, Liuyang City, Liuyang  410323,  China
  • Received:2010-11-15 Revised:2011-03-19 Online:2011-09-10 Published:2011-09-10
  • Contact: MA Guohui 1,*

施氮量对超级杂交中稻生育后期剑叶叶绿素荧光特性的影响

龙继锐1,马国辉1,*,万宜珍1,宋春芳1,孙健2   

  1. 1湖南杂交水稻研究中心 杂交水稻国家重点实验室, 湖南 长沙 410125; 2湖南浏阳永安农技站, 湖南 浏阳 410323
  • 通讯作者: 马国辉1,*
  • 基金资助:

     国家科技支撑计划资助项目(2006BAD02A13);湖南省十一五农业重大专项(2006NK1001)

Abstract: To compare the effects   of nitrogen fertilizer level on     chlorophyll fluorescence characteristics   in super hybrid rice flag leaves, a field fertilizer (slow release nitrogen) experiment was conducted  with a super hybrid rice Y Liang you 1 as material.  The photosynthetic electron transport rate (ETR),   effective quantum yield (EQY), photochemical quenching coefficient(qP), and nonphotochemical quenching coefficient(NPQ) of flag leaves  were measured at the heading,  full heading,  10 d after full heading,  20 d after full heading.  The results indicated that the  ETR and EQY were increased   from heading   to  20 d after full heading, whereas, the NPQ  decreased. During the same period, ETR, EQY, qP increased firstly and then decreased with  increasing nitrogen  level.  The ETR and EQY  at 135   kg/hm2  nitrogen level were the highest. In conclusion, the adaptive  nitrogen amount for photosynthesis were 135-180 kg/hm2.

Key words: super hybrid ricefont-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱slow release nitrogen fertilizerfont-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱chlorophyll fluorescencefont-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱nitrogensaving cultivation

摘要: 以缓释氮肥为材料,采用快速光曲线分析方法,比较研究了大田条件下6种施氮水平对超级杂交稻Y两优1号抽穗到蜡熟期剑叶叶绿素荧光动力参数的影响。结果表明,抽穗到齐穗后20 d,剑叶光合电子传递速率(ETR)、有效量子产量(EQY)和光化学猝灭系数(qP)均随时间推进而提高,非光化学猝灭系数(NPQ)则呈下降趋势;同一时期, ETR、EQY、qP均表现为随施氮量增加先增后减,但最高值的施氮量均不同;不同时期,ETR和EQY均以施氮135 kg/hm2时最高。综合来看,本试验条件下,施氮量以135~180 kg/hm2时叶绿素荧光指标组合最优

关键词: 超级杂交稻font-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱ 缓释氮肥font-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱叶绿素荧光font-family: 宋体, mso-bidi-font-family: 宋体, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">︱节氮栽培

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