| 土壤浸提液放置过程中铵浓度的变化 |
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| 引用本文： | 许安民,张英利.土壤浸提液放置过程中铵浓度的变化[J].实验室科学,2010,13(2):100-102. |
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| 作者姓名： | 许安民 张英利 |
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| 作者单位： | 西北农林科技大学,资源环境学院,陕西,杨凌712100 |
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| 摘 要： | 对土壤浸提液、蒸馏水、1mol.L-1KCl及含铵溶液等四种溶液不同保存方式下NH4+-N浓度的变化进行了试验。结果表明室温时暴露在空气中的蒸馏水、1mol.L-1KCl及含铵溶液,三天之内NH4+-N均呈现上升趋势,而土壤浸提液在一定浓度范围内NH4+-N也为上升趋势,但当原有NH4+-N达到一定浓度时则表现为下降趋势;将以上四种溶液保存在5℃的冷藏柜中,一个月之内NH4+-N浓度基本稳定。+
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| 关 键 词： | 土壤浸提液 NH4^＋ -N浓度 土壤氮素 |
The change of NH+4-N concentration during the process of soil extract solution storage |
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| XU An-min,ZHANG Ying-li.The change of NH+4-N concentration during the process of soil extract solution storage[J].Laboratory Science,2010,13(2):100-102. |
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| Authors: | XU An-min ZHANG Ying-li |
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| Institution: | (College of Resources and Environment, Northwest A＆F University, Yangling 712100, China) |
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| Abstract: | The authors have performed the study on the NH4^＋-N concentration change in different storage mehtods with four solutions of soil extract solution, distilled water, lmol.L^-1 KCI and ammonium solution. The experiment result shows that the NH4^＋-N concentration in distilled water, 1mol.L^-l KCl and ammonium solution increases within 3 days when exposed in air.NH4^＋-N concentration in soil extract solution also increases within certain concertration, but when NH4^＋-N concentration arrives at the limit level, the NH4^＋-N concertration has a decreasing trend. If the four solutions is put into icebox with 5℃, the NH4^＋-N concentration keeps stable. |
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| Keywords: | soil extract solution NH4^＋ -N concentration nitrogen element in soil |
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