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| 土壤速效氮两种测定方法的测定值相关性研究 | |
| 引用本文： | 夏栋,潘家荣,张博,熊诗源.土壤速效氮两种测定方法的测定值相关性研究[J].三峡大学学报(自然科学版),2010,32(2):95-97,102. |
| 作者姓名： | 夏栋 潘家荣 张博 熊诗源 |
| 作者单位： | 1. 三峡大学,化学与生命科学学院,湖北,宜昌,443002;三峡大学,三峡库区地质灾害教育部重点实验室,湖北,宜昌,443002 2. 三峡大学,化学与生命科学学院,湖北,宜昌,443002 3. 三峡大学,三峡库区地质灾害教育部重点实验室,湖北,宜昌,443002 |
| 摘 要： | 对三峡大学校园内以及高坝洲、水布垭大坝几处人工修复坡地不同肥力水平的97个土样,结合凯氏自动定氮仪的优点,分别采用常规分析(扩散法)与速测法(直接蒸馏法)对各土样速效氮进行测定,以探索速测与常规分析法测定值间的相关性.通过回归分析对数据的处理和统计,表明两种方法测定值间相关性极显著,并建立了它们之间的线性转换模式;同时对常规分析值和转换值进行了t检验,结果表明两者之间差异不显著(P0.05),因此利用凯氏自动定氮仪加碱直接蒸馏法代替扩散法测定速效氮是可行的. |
| 关 键 词： | 速效氮 直接蒸馏法 扩散法 回归分析 相关性 |
Relational Analysis of Measurement Values of Available N in Soil with Two Methods |
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| Xia Dong,Pan Jiarong,Zhang Bo,Xiong Shiyuan.Relational Analysis of Measurement Values of Available N in Soil with Two Methods[J].Journal of China Three Gorges University(Natural Sciences),2010,32(2):95-97,102. | |
| Authors: | Xia Dong Pan Jiarong Zhang Bo Xiong Shiyuan |
| Institution: | Xia Dong1,2 Pan Jiarong1 Zhang Bo2 Xiong Shiyuan1,2(1.College of Chemistry & Life Science,China Three Gorges Univ.,Yichang 443002,China,2.Key Laboratory of Geological Hazards in Three Gorges Reservoir Area,China) |
| Abstract: | The 97 soil samples with different fertilities are obtained from several artificial restored slopes in the campus of China Three Gorges University,Gaobazhou and Shuibuya projects.With the advantages of Kjeldahl nitrogen automatic determination instrument,the available N in the soil samples are measured with the conventional(diffusion process) and the quick estimation methods(direct distillation) respectively in order to find out the relation between the measurement values.By the regression analysis of data ... |
| Keywords: | available N direct distillation diffusion process regression analysis correlation |
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