| pH 升高对红壤硝化过程产生 N2O 的影响 |
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| 引用本文： | 王小治,孙 伟,尹微琴,封 克.pH 升高对红壤硝化过程产生 N2O 的影响[J].土壤,2009,41(6):962-967. |
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| 作者姓名： | 王小治 孙 伟 尹微琴 封 克 |
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| 作者单位： | 扬州大学环境科学和工程学院,江苏扬州,225009 |
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| 基金项目： | 国家自然科学基金项目，江苏省"青蓝工程"项目资助 |
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| 摘 要： | 对红壤添加NaOH培养获得不同pH系列的土壤.通过室内培养试验.研究了3种pH条件下土壤的N_2O排放和无机N的变化情况.结果表明:硝化活性随土壤pH升高而增强:pH升高增加了土壤N_2O的释放;纯化学过程对N_2O散发的贡献随pH的升高而降低;Nitrapyrin在pH 4.8和pH 6.0时表现山硝化抑制作用,在pH 8.5时抑制效果不明显,且提高了培养期间pH8.5土壤N_2O的释放量.
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| 关 键 词： | 硝化作用 纯化学过程 硝化抑制剂 |
Effects of pH on N2O emission from nitrification in acid soil |
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| WANG Xiao-zhi,SUN Wei,YIN Wei-qin,FENG Ke.Effects of pH on N2O emission from nitrification in acid soil[J].Soils,2009,41(6):962-967. |
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| Authors: | WANG Xiao-zhi SUN Wei YIN Wei-qin FENG Ke |
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| Institution: | College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China |
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| Abstract: | Three soils with different pH values were obatined from an acid soil by adding NaOH. The relationship between the changes of soil pH and N2O production from soils in the NH4+ oxidation progress was studied. The results showed with the increase of soil pH nitrification activity and the amount of N2O production increased while the contribution of pure chemical reaction to N2O emission from soil decreased. The results also showed that nitrapyrin can inhibit the nitrification in soil with pH 4.8 and pH 6.0, whereas there was no obvious inhibiting effect at soil pH 8.5 and nitrapyrin enhanced the emission of N2O in the incubation. |
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| Keywords: | pH N_2O pH N_2O Nitrification Pure chemical reaction Nitrification inhibitor |
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