| 高Co2浓度与土壤干旱对植物体内硫积累及分配的影响研究 |
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| 引用本文： | 郭建平,高素华.高Co2浓度与土壤干旱对植物体内硫积累及分配的影响研究[J].中国生态农业学报,2005,13(1):108-110. |
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| 作者姓名： | 郭建平 高素华 |
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| 作者单位： | 中国气象科学研究院,北京,100081 |
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| 基金项目： | 国家重点基础研究 (973 )发展规划项目 (G19990 43 40 7)资助 |
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| 摘 要： | 人工模拟大气CO2 浓度倍增和土壤干旱对植物体内S含量积累及分配的影响研究结果表明 ,高CO2 浓度和土壤干旱均使冬小麦不同部位含S量增加 ,而使大豆籽粒中S含量减少 ;干旱虽使小麦籽粒S含量增加 ,但却使小麦籽粒减产幅度大于S含量增幅。干旱对大豆的影响大于小麦 ,干旱减少大豆S含量 ,且降低大豆产量。高CO2 浓度和土壤干旱对毛乌素 3种牧草优势种茎和叶S含量的影响较复杂 ,但干旱使茎和叶生物量降幅远大于S含量变化。高CO2 浓度和土壤干旱使植物固定S总量下降 ,表现为负效应。
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| 关 键 词： | CO2浓度 土壤干旱 S 积累与分配 |
| 收稿时间： | 2003/10/27 0:00:00 |
| 修稿时间： | 2003年10月27 |
Impacts of co2 enrichment and soil drought Oil the S accumulation an d distribution of plants |
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| GU Jian-Ping and GAO Su-,Hu.Impacts of co2 enrichment and soil drought Oil the S accumulation an d distribution of plants[J].Chinese Journal of Eco-Agriculture,2005,13(1):108-110. |
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| Authors: | GU Jian-Ping and GAO Su- Hu |
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| Abstract: | The impacts of CO 2 enrichment and soil drought on the S accumulation and distribution of plants were studied.The results show that CO 2 enrichment and soil drought can increase the S contents for different parts of w inter wheat,and decrease the S content o f soybean grains.Although,soil drought increases the S content of winter wheat grains,the reduction scal e of yield is bigger than the increasing scale of grain S content.The impact of soil drought on the S content of soybean grains is more serious than that on win ter wheat.Soil drought not only decrease s the grain S content,but also decreases the grain yield of soybean.The impacts of CO 2 enrichment and soil drought on s talk and leaf S contents for 3 dominant species in Mu Us sandland are relatively complicated,but the reduction scale of the dry mass is bigger than the changing scale of S content.The total S fixation under the situation of CO 2 enrichment and soil drought decreases,showing the n egative effect. |
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| Keywords: | CO 2 concentrati on Soil drought Sulfur Accumulation and distribution |
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