| 黄花苜蓿光合蒸腾日变化特征及其与环境因子的关系 |
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| 引用本文： | 茫来,宝音陶格涛,布仁其其格,张金凤,包青海.黄花苜蓿光合蒸腾日变化特征及其与环境因子的关系[J].草地学报,2010,18(2):195-198. |
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| 作者姓名： | 茫来 宝音陶格涛 布仁其其格 张金凤 包青海 |
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| 作者单位： | 内蒙古大学生命科学学院,生态与环境科学系,呼和浩特,010021;锡林郭勒职业学院,锡林浩特,026000 |
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| 基金项目： | 现代农业产业技术体系建设(牧草)专项资金资助;;国家基础科学人才培养基金(J0730648) |
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| 摘 要： | 在盆栽条件下,对一年龄黄花苜蓿(Medicago falcata L.)叶片光合蒸腾特征和光合有效辐射(PAR)、空气CO2浓度(Ca)、空气相对湿度(RH)、空气温度(Ta)等环境因子的日变化进行测定,并采用相关系数、偏相关系数和逐步回归方法分析了黄花苜蓿光合蒸腾特性日变化与环境因子的关系。结果表明,光合速率(Pn)和蒸腾速率(Tr)日变化均呈单峰曲线,12:00左右达到峰值,并且没有光合午休现象。Pn和Tr与PAR之间呈极显著正相关,与其它环境因子相关不显著,这说明对光合蒸腾特征起决定作用的环境因子是PAR。
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| 关 键 词： | 光合速率 蒸腾速率 环境因子 黄花苜蓿 |
Diurnal Dynamics of Photosynthetic and Transpiration Rates of Medicago falcata L. and Their Relationships with Environmental Factors |
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| MANG Lai,BAO Yin Tao Ge Tao,BU Ren Qi Qi Ge,ZHANG Jin-feng,BAO Qing-hai.Diurnal Dynamics of Photosynthetic and Transpiration Rates of Medicago falcata L. and Their Relationships with Environmental Factors[J].Acta Agrestia Sinica,2010,18(2):195-198. |
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| Authors: | MANG Lai BAO Yin Tao Ge Tao BU Ren Qi Qi Ge ZHANG Jin-feng BAO Qing-hai |
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| Institution: | 1.College of Life Science;Inner Mongolia University;Huhhot;Inner Mongolia Autonomous Region 010021;China;2.Xilingol Vocational College;Xilinhot;Inner Mongolia Autonomous Region 026000;China |
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| Abstract: | The photosynthetic and transpiration characteristics of one year old Medicago falcata L.and photosynthetic active radiation(PAR),CO2 concentration in air(Ca),air relative humidity(RH),and air temperature(Ta) were measured under potted conditions and the relationships between the diurnal dynamics of photosynthetic rate(Pn),transpiration rate(Tr) and environmental factors were analyzed by correlation coefficient,partial correlation coefficient,and stepwise multi-regress.The results show that the diurnal dynam... |
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| Keywords: | Photosynthetic rate Transpiration rate Environmental factor Medicago falcata L |
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