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Effect of Nitrogen Fertilization on Leaf Chlorophyll Fluorescence in Field-Grown Winter Wheat Under Rainfed Conditions

SHANGGUAN Zhou-ping ZHENG Shu-xia ZHANG Lei-ming XUE Qing-wu

中国农业科学（英文版）2005，Vol.4Issue(1)：15-20,6.

Effect of Nitrogen Fertilization on Leaf Chlorophyll Fluorescence in Field-Grown Winter Wheat Under Rainfed Conditions

SHANGGUAN Zhou-ping ¹ZHENG Shu-xia ¹ZHANG Lei-ming ¹XUE Qing-wu²

作者信息

1. State Key Laboratory of Soil Erosion and Dryland Agriculture on the Loess Plateau, Institute of Soil and Water Conservation, The Chinese Academy of Sciences, Yangling 712100, P.R. China
2. Northwestern Agricultural Research Center, Montana State University, 4570 Montana 35, Kalispell MT 59901, USA
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摘要

Abstract

The effect of nitrogen fertilization on leaf chlorophyll fluorescence was studied in field-grown winter wheat during grain filling under rainfed conditions in Loess Plateau. Results showed that the actual photochemical efficiency of PS Ⅱ reaction center (Ф PS Ⅱ) decreased significantly as leaf water stress progressed, however, the Ф PS was increased by nitrogen fertilization. The Ф PS Ⅱ of 0, 90 and 180 kg ha-1 nitrogen treatments at noon were 0.197, 0.279 and 0.283, respectively, which decreased by 57.7, 56.4 and 40.2% as compared was even higher than that in the moming. Application of nitrogen fertilizer significantly increased maximum photochemical efficiency (Fv/Fm), photochemical quenching coefficient (qP) and non-photochemical quenching coefficient (qNP). These results indicated that application of nitrogen fertilizer could increase the light energy conversion efficiency, the potential activity of photosynthetic reaction center, and the non-photochemical dissipation of excess light energy, which can prevent leaf photosynthetic apparatus from damage of treatments, indicating that the excess nitrogen was unfavorable to photosynthesis.

关键词

Nitrogen fertilizer/Chlorophyll fluorescence/Winter wheat/Dryland

Key words

Nitrogen fertilizer/Chlorophyll fluorescence/Winter wheat/Dryland

引用本文复制引用

SHANGGUAN Zhou-ping,ZHENG Shu-xia,ZHANG Lei-ming ,XUE Qing-wu..Effect of Nitrogen Fertilization on Leaf Chlorophyll Fluorescence in Field-Grown Winter Wheat Under Rainfed Conditions[J].中国农业科学（英文版）,2005,4(1):15-20,6.

基金项目

This study was funded by the National Natural Science Foundation of China (30270801). （30270801）

中国农业科学（英文版）

ISSN：2095-3119

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