| 还原剂对森林暗棕壤碱解氮测定的影响 |
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| 引用本文： | 郑红,唐翠,范金凤.还原剂对森林暗棕壤碱解氮测定的影响[J].东北林业大学学报,2006,34(3):59-60. |
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| 作者姓名： | 郑红 唐翠 范金凤 |
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| 作者单位： | 东北林业大学,哈尔滨,150040;黑龙江生态工程职业学院;东北林业大学 |
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| 摘 要： | 在扩散法测定森林暗棕壤碱解氮中,为明确FeSO_4-Zn还原剂添加的必要性,在添加还原剂的情况下对土壤碱解氮含量进行了测定,并与对照(不添加还原剂)进行比较。回归分析结果表明：两处理测定值间相关极显著。当扩散时间在8、12、18、24、30、48 h时,土壤碱解氮扩散量与扩散时间呈直线相关,在24 h内,对照所测得的碱解氮结果快速、准确、稳定。测定森林暗棕壤碱解氮时不添加还原剂较为合适。
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| 关 键 词： | 森林暗棕壤 碱解氮 回归分析 还原剂 |
| 收稿时间： | 2005-12-08 |
| 修稿时间： | 2005-12-08 |
Effect of Reductants on the Determination of Base Hydrolyzable N in Dark-Brown Forest Soil |
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| Zheng Hong,Tang Cui,Fan Jinfeng.Effect of Reductants on the Determination of Base Hydrolyzable N in Dark-Brown Forest Soil[J].Journal of Northeast Forestry University,2006,34(3):59-60. |
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| Authors: | Zheng Hong Tang Cui Fan Jinfeng |
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| Institution: | Northeast Forestry University, Harbin 150040, P. R. China;Heilongjiang Vocational Institute of Ecological Engineering;Northeast Forestry University |
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| Abstract: | Content of base hydrolysable N in dark-brown forest soil was determined under the presence of reductant FeSO_4-Zn by diffusion method in order to approach the necessity of adding reductant,and the determination result was compared with the control with the absence of reductants.Regression analysis result showed that significant difference in eontent of base hydrolysable N was found between the two treatments.The diffused content of base hydrolysable N was linear with diffusion time within 8,12,18,24,30 and 48 h.Within 24 h,the determination result of the control with absence of reduetants was fast,exaet and steady.It is suggested that adding no reductant is appropriate in the determination of base hydrolysable N in dark-brown forest soil. |
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| Keywords: | Dark-brown forest soils Base hydrolysable N Regression analysis Reductants |
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