CHARACTERISTIC PARAMETERS OF LIGHT RESPONSE CURVES OF PHOTOSYNTHESIS OF WINTER WHEAT IN NORTH CHINA

Lu Peiling; Luo Yi; Liu Jiandong; Yu Qiang

Vol.11, NO.2, 2000

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2000 > 11(2): 236-241

Lu Peiling, Luo Yi, Liu Jiandong, et al. Characteristic parameters of light response curves of photosynthesis of winter wheat in North China. J Appl Meteor Sci, 2000, 11(2): 236-241.

Citation:

Lu Peiling, Luo Yi, Liu Jiandong, et al. Characteristic parameters of light response curves of photosynthesis of winter wheat in North China. J Appl Meteor Sci, 2000, 11(2): 236-241.

Lu Peiling, Luo Yi, Liu Jiandong, et al. Characteristic parameters of light response curves of photosynthesis of winter wheat in North China. J Appl Meteor Sci, 2000, 11(2): 236-241.

Citation:

Lu Peiling, Luo Yi, Liu Jiandong, et al. Characteristic parameters of light response curves of photosynthesis of winter wheat in North China. J Appl Meteor Sci, 2000, 11(2): 236-241.

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CHARACTERISTIC PARAMETERS OF LIGHT RESPONSE CURVES OF PHOTOSYNTHESIS OF WINTER WHEAT IN NORTH CHINA

1.
Beijing Forestry University, Beijing 100083
2.
Yucheng Comprehensive Experimental Station, Institute of Geography, Chinese Academy of Sciences, Beijing 100101

Received Date: 1998-08-31
Rev Recd Date: 1999-07-14
Publish Date: 2000-05-31

Abstract

Abstract

The photosynthesis rate of leaves in field and their corresponding meteorological elements are observed in each growing season of winter wheat in North China. The light response curves are fitted for each development duration, and characteristic parameters are obtained such as initial quantum efficiency, maximum photosynthesis rate and convexity. In the entire growth season of winter wheat in North China, the initial quantum efficiency varies between 0.05 and 0.075, the maximum photosynthesis rate varies between 5 and 25 μmol·m^-2·s^-1. It is shown that the initial quantum efficiency of each development duration does not vary much and the maximum photosynthesis rate ranges from 20 to 25 μmol·m^-2·s^-1 before heading duration, and decreases greatly in reproductive growth duration, with the decreasing of nitrogen, phosphorus and potassium of leaves.
- Photosynthesis;
- Light quantum flux density;
- lnitial quantum efficiency;
- Maximum photosynthetic rate

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References(7)

Figures and Tables

图 1 1998年4、5月间田间小麦叶片光合作用的光响应曲线

(a) 拔节期 (b) 孕穗期 (c) 抽穗期 (d) 灌浆初期 (e) 乳熟期 (f) 蜡熟期

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图 2 成熟期小麦叶片光合作用的光响应曲线

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图 3 小麦叶片最大光合作用速率与叶片氮、磷、钾含量随生育期的变化

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References

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