| 冬小麦群体CO2同化速率与日净光合生产力 |
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| 引用本文： | 杜宝华,曹永华.冬小麦群体CO2同化速率与日净光合生产力[J].作物学报,1995,21(5):598-604. |
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| 作者姓名： | 杜宝华 曹永华 |
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| 作者单位： | 中国农业科学院农业气象研究所，北京，100081 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 根据农田冬小麦群体ＣＯ２同化速率系统的试验观测资料分析了：（１）冬小麦群体光合速率与冠层入射光合有效辐射ＰＡＲ的关系，以及各生育期的光饱和现象；（２）冬小麦群体光合速率与最大光合生产率的生育期的动态变化。提出大田作物自身的同化作用引起冠层内ＣＯ２浓度降低，会成为群体光合生产力的限制因素。
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| 关 键 词： | 冬小麦 群体 同化速率 净光合量 二氧化碳 |
| 收稿时间： | 1994-03-31 |
Population CO_2 Assimilation Rate and Daily Net Photosynthetic Productivity of Winter Wheat |
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| Du Baohua Cao Yonghua,Hong Jiahua,Zhang Houxuan Tong Chengfeng,Yang Ping.Population CO_2 Assimilation Rate and Daily Net Photosynthetic Productivity of Winter Wheat[J].Acta Agronomica Sinica,1995,21(5):598-604. |
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| Authors: | Du Baohua Cao Yonghua Hong Jiahua Zhang Houxuan Tong Chengfeng Yang Ping |
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| Institution: | The Institute of Meteorology,Chinese Academy of Agriculture Science,Beijing 100081 |
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| Abstract: | Based on the field experiment systemic data of population CO2 assimilation rate of winter wheat, the analyses includes: a. The relationship between photosynthetic rate and population photosynthetic Active Radiation (PAR) above the canopy, and the light saturation point of each stage. b. The dynamic change of population photosynthetic rate and the maximum daily photosynthetic effectivity of winter wheat at each stage. c. The decrease of CO2 concentration in the wheat canopy caused by assimilation of the wheat itself is a limiting factor of the population photosynthetic productivity. |
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| Keywords: | Winter wheat Population CO2 assimilation rate Net quantity of photosynthesis |
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