氮磷添加对唐古特白刺叶绿素含量和光合活性的影响

doi:10.11733/j.issn.1007-0435.2020.03.013

草地学报 ›› 2020, Vol. 28 ›› Issue (3): 694-702.DOI: 10.11733/j.issn.1007-0435.2020.03.013

氮磷添加对唐古特白刺叶绿素含量和光合活性的影响

刘成功^1,2, 孙高洁^1,2, 段娜³, 李清河^1,2, 朱甜甜^1,2, 李慧卿^1,2

1. 中国林业科学研究院林业研究所, 北京 100091;
2. 国家林业和草原局林木培育重点实验室, 北京 100091;
3. 中国林业科学研究院沙漠林业实验中心, 内蒙古磴口 015200

收稿日期:2019-12-22 修回日期:2020-02-19 出版日期:2020-06-15 发布日期:2020-05-30
通讯作者: 李清河
作者简介:刘成功(1990-),男,安徽合肥人,博士研究生,主要从事植物逆境生理生态学研究,E-mail:liucgwlq@163.com;
基金资助:
国家重点研发计划专题（2016YFC05009083）；国家自然科学基金（31470622）；中央级公益性科研院所基本科研业务费专项资金（CAFYBB2017MA021）共同资助

Effects of Nitrogen and Phosphorus Addition on Chlorophyll Content and Photosynthetic Activity of Nitraria tangutorum

LIU Cheng-gong^1,2, SUN Gao-jie^1,2, DUAN Na³, LI Qing-he^1,2, ZHU Tian-tian^1,2, LI Hui-qing^1,2

1. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
2. Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing 100091, China;
3. Experiment Center of Desert Forestry, Chinese Academy of Forestry, Dengkou, Inner Mongolia 015200, China

Received:2019-12-22 Revised:2020-02-19 Online:2020-06-15 Published:2020-05-30

摘要/Abstract

摘要： 本文采用叶绿素荧光成像和叶绿素荧光动力学相结合的方法研究外源氮（nitrogen，N）、磷（phosphorus，P）对荒漠植物唐古特白刺（Nitraria tangutorum）叶绿素含量、叶绿素荧光参数、荧光比R_fd的影响。结果表明：在添加P为3 gP·m^-2下，添加N为5 gN·m^-2，10 gN·m^-2和15 gN·m^-2时白刺的叶绿素含量显著下降（P < 0.05）；随着P的添加，叶绿素含量呈先增加后减小趋势，P3时（3 gN·m^-2+6 gP·m^-2）最大；外源N、P对白刺的F_m，F_v，F_v/F_m和R_fd的影响不显著，说明外源N、P未损害PSⅡ反应中心；单施P时，白刺的R_fd最大，荧光强度最强，而P3时的光化学效率较好，叶柄以上至中部的荧光较强。因此，本研究得出外源N、P对白刺叶绿素含量和荧光活性的影响具有耦合效应，N添加为3 gN·m^-2下配施6 gP·m^-2能够改善白刺的叶绿素含量和荧光活性；叶绿素荧光成像技术可直观地看出白刺的叶绿素荧光分布特征，为及时发现荒漠植物的胁迫症状提供了方法。

关键词: 唐古特白刺, 氮磷添加, 光合活性, 叶绿素荧光成像

Abstract: In this study,we used the method of chlorophyll fluorescence imaging and chlorophyll fluorescence dynamics to explore the effects of exogenous nitrogen and phosphorus addition on chlorophyll content,chlorophyll fluorescence parameters and fluorescence ratio R_fd images of the typical desert plant,Nitraria tangutorum. The results showed that the chlorophyll content in the leaves of N. tangutorum decreased significantly (P<0.05) when 5,10 and 15 g N·m^-2 nitrogen combined with 3 gP·m^-2phosphorus were added. With the increase of phosphorus addition,the chlorophyll content in the leaves of N. tangutorum trended to increase first and then decrease,the maximum chlorophyll content reached when 6 g P·m^-2 phosphorus were provided. There was no difference among F_m,F_v,F_v/F_m and R_fd gradients (P>0.05),and exogenous nitrogen and phosphorus did not damage the reaction center of PSⅡ. In addition,The CFI technology showed when 3 g P·m^-2 was added,the fluorescence ratio R_fd of N. tangutorum was the largest and the fluorescence intensity was the strongest,and the fluorescence was stronger in the middle and upper part of the leaves. Under fixed nitrogen level,the P3 had better photochemical efficiency,and the fluorescence intensity from above petiole to middle part was stronger. Therefore,it was concluded that exogenous nitrogen and phosphorus addition have coupling effect on chlorophyll content and fluorescence activity of N. tangutorum,and 3 g N·m^-2 nitrogen with 6 g P·m^-2 phosphorus can improve the chlorophyll content and fluorescence activity. By means of CFI technology,we can directly see the distribution characteristics of chlorophyll fluorescence on the leaves of N. tangutica. It provides a method for finding the stress symptoms of desert plants in time.

Key words: Nitraria tangutorum, Nitrogen and phosphorus additions, Photosynthetic activity, Chlorophyll fluorescence imaging

中图分类号:

S793.9

刘成功, 孙高洁, 段娜, 李清河, 朱甜甜, 李慧卿. 氮磷添加对唐古特白刺叶绿素含量和光合活性的影响[J]. 草地学报, 2020, 28(3): 694-702.

LIU Cheng-gong, SUN Gao-jie, DUAN Na, LI Qing-he, ZHU Tian-tian, LI Hui-qing. Effects of Nitrogen and Phosphorus Addition on Chlorophyll Content and Photosynthetic Activity of Nitraria tangutorum[J]. Acta Agrestia Sinica, 2020, 28(3): 694-702.

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氮磷添加对唐古特白刺叶绿素含量和光合活性的影响

Effects of Nitrogen and Phosphorus Addition on Chlorophyll Content and Photosynthetic Activity of Nitraria tangutorum

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