中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
水分和磷肥对达乌里胡枝子不同叶位叶绿素荧光参数特征的影响

文献类型:期刊论文

作者段东平 ; 徐炳成 ; 牛富荣 ; 徐伟洲
刊名草 业 科 学
出版日期2012
卷号29期号:03页码:422-428
关键词达乌里胡枝子 :Lespedeza daurica 叶位 leave position 叶绿素荧光 chlorophyll fluorescence 水肥 water and fertilizer
其他题名Effects of water and phosphorus on chlorophyll fluorescence characteristics of
中文摘要采用盆栽控制试验,研究了达乌里胡枝子(Lespedeza davurica)在3种水分水平[分别为土壤田间持水量的80%(HW)、60%(MW)、40%(LW)]与2种肥料处理(P处理:纯P 0.1g.kg-1干土;对照:不施肥)下不同叶位叶绿素荧光参数特征。结果表明,P处理中,MW下旗叶F0和Fv/Fm值显著低于中叶,Fm值差异不显著,说明在轻度水分胁迫下旗叶PSⅡ反应中心受到的损伤较小,虽然旗叶和中叶电子传递没有差异,但旗叶光能转换效率比中叶高。另外,P处理显著降低了达乌里胡枝子叶片NPQ值,同时显著提高了MW下新叶和旗叶Fv/Fm值,说明施用P肥能够有效减少叶片对光能的热耗散,并提高其在一定水分胁迫下的光能利用能力,增强达乌里胡枝子对黄土丘陵区的适应能力
英文摘要Abstract:A pot experiment was used to determine the Chlorophyll fluorescence characteristics of different
position leaves in Lespedeza daurica under three different water level(80% FC,60% FC and 40% FC)
and two phosphorus treatments(0.1Pg·kg-1 dry soil and no P addition).The results of this study
showed that the initial fluorescence(F0)and the maximum photochemical efficiency(Fv/Fm)of flag leaves
were significantly lower those of middle leaves under moderate water stress and supply phosphorus,while
there were no significant differences in maximal fluorescence(Fm),implying that the PSⅡreaction center of
flag leaves were less destroyed than the middle leaf and the light energy transformation efficiency of flag
leaves was higher.The leaf quenching coefficient(NPQ)significantly decreased and the Fv/Fmvalues of
flag leaf and new leaf under moderate water stress condition were significantly higher in supply phosphorus
treatment,indicating that the light energy dissipation decreased and light energy transformation increased
under water stress by addition of phosphorus,which suggested that the supply phosphorus improved the adaptive
 capacity of L.dauricato semiarid loess hilly-gully region.
语种中文
公开日期2014-07-09
源URL[http://ir.iswc.ac.cn/handle/361005/5402]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
段东平,徐炳成,牛富荣,等. 水分和磷肥对达乌里胡枝子不同叶位叶绿素荧光参数特征的影响[J]. 草 业 科 学,2012,29(03):422-428.
APA 段东平,徐炳成,牛富荣,&徐伟洲.(2012).水分和磷肥对达乌里胡枝子不同叶位叶绿素荧光参数特征的影响.草 业 科 学,29(03),422-428.
MLA 段东平,et al."水分和磷肥对达乌里胡枝子不同叶位叶绿素荧光参数特征的影响".草 业 科 学 29.03(2012):422-428.

入库方式: OAI收割

来源:水土保持研究所

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