| 西安蔬菜主产区土壤硝态氮累积现状与蔬菜产品、浅层地下水氮素污染调查研究 |
| 投稿时间：2007-05-25 修订日期：2007-10-19 点此下载全文 |
| 引用本文：程智慧,刘旭新,董志刚,冯武焕.西安蔬菜主产区土壤硝态氮累积现状与蔬菜产品、浅层地下水氮素污染调查研究[J].西北农业学报,2008,17(1):188~192,198 |
| DOI:10.7606/j.issn.1004-1389.2008.01.043 |
| 摘要点击次数: 136 |
| 全文下载次数: 94 |
| 作者 | 单位 | | 程智慧 | 西北农林科技大学园艺学院, 陕西杨凌, 712100 | | 刘旭新 | 西北农林科技大学园艺学院, 陕西杨凌, 712100
新疆农业职业技术学院, 新疆昌吉, 831100 | | 董志刚 | 西北农林科技大学园艺学院, 陕西杨凌, 712100 | | 冯武焕 | 西安市农业技术推广中心, 西安, 710061 |
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| 基金项目:国家“十五”科技攻关项目(2004BA516A09) |
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| 中文摘要:以西安郊区主要周边蔬菜产区为研究地点,通过分析蔬菜鲜样、菜田土壤2 m垂直分层土样、浅层地下水的水样,研究蔬菜及菜田生态系统氮肥污染现状。结果表明,按我国的地下水硝酸盐含量标准,在选点采样中1.5~3 m深的地下水硝酸盐含量超标,菜田土层土质疏松与浇水次数较多的菜田硝酸盐向下淋洗现象明显,温室较露地2 m深土层硝态氮与铵态氮分布浓度高,菜田2 m深土层中常有硝态氮与铵态氮的聚集峰,不同深度地下水的菜田韭菜硝酸盐含量差异明显。 |
| 中文关键词:蔬菜 硝态氮 铵态氮 浅层地下水 |
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| The Investigation and Research of N Contamination in Vegetable, Soil and Underground Water in Vegetable Fields of Xi’an |
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| Abstract:The objective of this research has been conducted to investigate the contamination of vegetable fields environment caused by application of chemical fertilizer,and use the methods of analyzing the content of nitrate and nitrite in vegetable,soil(<2 m)and underground water.The results show the highest content of nitrate in undergro und water was detected in depth of 1.5 to 3 m undergro und water from samples.The sand soil and the more times of irrigation have magnificent effects on nitrate leaching.The content of NO3--N,NH4+-N in green houses soil in mdepth range is more rich than opening vegetable fields,and the leek of same variety in different places with different depth of under-ground water have significant different content of nitrate in samples we collected.We present some methods for controlling nit rate contamination in the environment of vegetable cultivation. |
| keywords:Vegetable fields NO3--N N H4+-N U ndergro und water |
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