| 土壤水分和CO2浓度增加对小麦、玉米、棉花蒸散、光合及生长的影响 |
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| 引用本文： | 康绍忠,张富仓.土壤水分和CO2浓度增加对小麦、玉米、棉花蒸散、光合及生长的影响[J].作物学报,1999,25(1):55-63. |
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| 作者姓名： | 康绍忠 张富仓 |
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| 作者单位： | 黄土高原土壤侵蚀与早地农业国家重点实验室，陕西杨陵，712100,西北农业大学农业水土工程研究所，陕西杨陵， |
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| 基金项目： | 中国科学院“百人计划”项目，国家自然科学基金的资助 |
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| 摘 要： | 通过在大型人工气候室内的试验、设计了350和700μl/L，两种C02浓度水平和高、中、低三种土壤水分处理，其土壤含水率范围分别为85%-100%, 65%-85%和45%-65%(占田间持水量的百分数)，分析了土壤水分条件和大气CO2浓度增加的共同作用对小麦、玉米、棉花等作物蒸发蒸腾、光合速率、生长状况与干物质积累、水分利用效率的影响。
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| 关 键 词： | 土壤水分条件 大气CO2浓度 蒸发蒸腾 光合作用 水分利用效率 |
| 收稿时间： | 1998-05-25 |
| 修稿时间： | 1998-11-21 |
Effects of Soil Water and the Atmospheric CO2 Concentration Increase on Evapotranspiration, Photosynthesis, Growth of Wheat, Maize and Cotton |
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| Kang Shaozhong Zhang Fucang Liang Yinli Ma Qinglin Hu Xiaotao.Effects of Soil Water and the Atmospheric CO2 Concentration Increase on Evapotranspiration, Photosynthesis, Growth of Wheat, Maize and Cotton[J].Acta Agronomica Sinica,1999,25(1):55-63. |
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| Authors: | Kang Shaozhong Zhang Fucang Liang Yinli Ma Qinglin Hu Xiaotao |
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| Institution: | The National Laboratory of Soil Erosion and Dryland Farming in Loess Plateau, Academia Sinica,Shannri Yangling 712100 |
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| Abstract: | Crops were exposed to both 350 and 700 ul/L of CO2 in the plant growth chamber designed with high, middle and low soil moisture treatments, with the soil water contents of 85% -100%, 65%-85% and 45%- 65% (percentage of field capacity) respectively. This paper analysed the combined effects of the atmospheric CO2 concentration and soil moisture on photosynthesis rrte, evapotranspiration, growth, dry matter storage, water use efficiency of crops etc. The study showed that there were obviously different crop (wheat, maize and cotton)responses to CO2 enriched under different soil moisture treatments, photosynthesis rate, plants height and leaf area index (LAI) in low soil moisture treatment than high soil moisture treatment , also a decreasing effects of transpiration rate per leaf and total evapotranspiration content in low soil moisture treatment than high soil moisture treatment responses to doubling CO2 concentration. The positive effects of photosynthesis and growth, and diverse effects of to evapo-transpiration with elevated CO2 reduce the unfavorable effects of crop photosynthesis and growth owing to water stress. There was an increasing extent of crop water use efficiency(WUE)in low soil moisture regime than high and middle soil moisture regimes. |
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| Keywords: | Soil moisture regime Atmospheric CO2 concentration Evapotranspiration Photosynthesis Water use efficiency |
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