| 滇池流域西芹保护地氮流失分析* |
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| 引用本文： | 胡万里,孔令明,段宗颜,卢昌艾,夏体渊.滇池流域西芹保护地氮流失分析*[J].云南农业大学学报,2006,21(5):670-672. |
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| 作者姓名： | 胡万里 孔令明 段宗颜 卢昌艾 夏体渊 |
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| 作者单位： | (1.云南省农业科学院农业资源环境研究所,云南 昆明 650205;;2.中国农业科学院土壤肥料研究所,北京 100081) |
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| 摘 要： | 滇池流域蔬菜花卉基地,氮的流失量随着施肥量的增加而增加,当纯氮用量达到1200kg/hm2时,直接淋洗量达到了79.5kg/hm2,潜在淋洗量达到了266.55kg/hm2,分别是低量施肥(450kg/hm2)的2倍和3倍多。HF(高量施肥)处理的流失率是29%,LF处理流失率是11%。如果采取有效的调控措施,使施肥量合理化,从目前1200kg/hm2减少到合理施肥450kg/ hm2,那么每年将减少0.758万t纯氮进入滇池。
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| 关 键 词： | 总氮 土壤水 施肥量 流失 潜在 |
| 收稿时间： | 2005-10-18 |
Analysis on Runoff of Nitrogen Protective Celery Field in Dianchi Lake Drainage Areas |
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| HU Wan-li,KONG Ling-ming,DUAN Zong-yuan,LU Chang-ai,XIA Ti-yuan.Analysis on Runoff of Nitrogen Protective Celery Field in Dianchi Lake Drainage Areas[J].Journal of Yunnan Agricultural University,2006,21(5):670-672. |
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| Authors: | HU Wan-li KONG Ling-ming DUAN Zong-yuan LU Chang-ai XIA Ti-yuan |
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| Institution: | (1.Agricultural Resource &; Environment Institute,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;2.Soil and Fertilizer &; Soil Institute, Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | The research shows that amount of runoff nitrogen is very severity on the base of flower and vegetable in Dianchi Lake. The mount of nitrogen lost is increased with nitrogen input. When the amount of nitrogen input reaches 1200kg/hm2, 79.5kg nitrogen is been runoff, 266.66kg nitrogen is conserved in soil water. Which are two and three times in treat LF respectively. Runoff rat of nitrogen input is 29 percent in treat HF, and 11 percent in treat LF. If effective ways are taken to make nitrogen input more reasonable, the amount of nitrogen input decreases from 1200kg/hm2 to 450kg/hm2, Nitrogen lost will decrease 75800t into Dianchi Lake each year. |
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| Keywords: | nitrogen soil water fertilizer runoff latent |
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