| 棉田暗管控制排水和氮素流失研究 |
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| 引用本文： | 袁念念,黄介生,谢华,黄志强.棉田暗管控制排水和氮素流失研究[J].灌溉排水学报,2011,30(1):103-105. |
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| 作者姓名： | 袁念念 黄介生 谢华 黄志强 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室; |
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| 基金项目： | 国家“十一五”科技支撑计划课题(2006BAD11B06) |
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| 摘 要： | 在湖北荆州丫角排灌试验站进行暗管控制排水和自由排水对照试验,结果发现,暗管排水累积排水量随时间呈线性变化;暗管排水氮素累积流失量随时间呈二次曲线变化.控制水位为30 cm的田块氮素累积流失量随时间而增加,而其他控制排水及自由排水田块氮素累积流失量随时间而减少.控制排水可以减少累积排水量和氮素累积流失量,且随控制水位增加...
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| 关 键 词： | 控制排水 控制水位 累积排水量 氮素累积流失量 |
Drainage and Nitrogen Loss from Controlled Pipe Drainage Cotton Field |
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| YUAN Nian-nian,HUANG Jie-sheng,XIE Hua,HUANG Zhi-qiang.Drainage and Nitrogen Loss from Controlled Pipe Drainage Cotton Field[J].Journal of Irrigation and Drainage,2011,30(1):103-105. |
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| Authors: | YUAN Nian-nian HUANG Jie-sheng XIE Hua HUANG Zhi-qiang |
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| Institution: | YUAN Nian-nian,HUANG Jie-sheng,XIE Hua,HUANG Zhi-qiang(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China) |
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| Abstract: | A field contrastive experiment was set up at drainage and irrigation experimental station,Jingzhou Yajiao,Hubei.Results showed that controlled drainage reduced drain outflow and nitrogen loss.Drain outflow and nitrogen loss declined with increment of the controlled water table.There was a positive linear relationship between drain outflow and time.Accumulation of nitrogen loss from pipe drainage fluctuated with time fitted a conic curve and the related coefficient was up to 0.95.The increment of drain outfl... |
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| Keywords: | controlled drainage controlled water table accumulation of drain outflow accumulation of nitrogen loss |
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