| 稻鸭、稻鱼共作生态系统中稻田田面水的N素动态变化及淋溶损失 |
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| 引用本文： | 李成芳,曹凑贵,汪金平,潘盛刚,叶成,叶威,刘铠,曾金凤.稻鸭、稻鱼共作生态系统中稻田田面水的N素动态变化及淋溶损失[J].环境科学学报,2008,28(10):2125-2132. |
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| 作者姓名： | 李成芳 曹凑贵 汪金平 潘盛刚 叶成 叶威 刘铠 曾金凤 |
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| 作者单位： | 1. 华中农业大学作物栽培与生理生态研究中心,武汉,430070
2. 长江流域水环境监测中心,武汉,430010 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 通过田间试验研究了稻鸭、稻鱼共作复合生态系统稻季田面水及渗漏水中各形态N素的动态变化及N肥的渗漏损失量.结果表明,水稻生长期间,田面水中N素形态以NH 4-N为主,渗漏水中则以NO-3-N为主要形态;施肥有利于田面水和渗漏水各形态N素含量的提高.相对于常规稻作处理(CK),稻鸭(RD)、稻鱼共作(RF)时田面水的pH、NH 4-N含量和TN含量显著增加,渗漏水的NO-3-N和TN含量降低,而渗漏水NH4 4-N元明显变化.所有处理田面水中NH 4-N/TN在施肥后第3天达到最大,随后降低;而所有处理NH 4-N/TN的均值相当.对各处理的N素淋失分析可知,处理RD与RF的肥料N潜在淋失率分别为2.72%、2.58%,低于CK处理(2.99%),表明稻鸭、稻鱼共作可以减少施入N肥潜在的下渗淋失,同时稻鱼共作减少N肥淋失的效果好于稻鸭共作.
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| 关 键 词： | 田面水 渗漏水 氮素 稻鸭共作 稻鱼共作 |
| 收稿时间： | 2007/10/5 0:00:00 |
| 修稿时间： | 3/10/2008 4:30:45 PM |
Dynamic variations and losses of N in floodwater of paddy fields in integrated rice-duck and rice-fish ecosystems |
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| LI Chengfang,CAO Cougui,WANG Jinping,PAN Shenggang,YE Cheng,YE Wei,LIU Kai and ZENG Jinfeng.Dynamic variations and losses of N in floodwater of paddy fields in integrated rice-duck and rice-fish ecosystems[J].Acta Scientiae Circumstantiae,2008,28(10):2125-2132. |
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| Authors: | LI Chengfang CAO Cougui WANG Jinping PAN Shenggang YE Cheng YE Wei LIU Kai and ZENG Jinfeng |
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| Affiliation: | Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070,Crop Production, Physiology and Ecology Center, Huazhong Agricultural University, Wuhan 430070 and Yangtze Vally Water Environment Monitoring Center, Wuhan 430010 |
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| Abstract: | |
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| Keywords: | Floodwater percolation water nitrogen integrated rice-duck system integrated rice-fish system |
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