| 摘要: |
| 在淹水条件下，采用每隔一定时间取样分析的连续培养方法，研究了土壤有机氮的矿化过程。试验表明，与间歇淋洗相比，连续培养条件下有机氮矿化过程较慢，矿化累积量较少，且达一定程度后明显降低。但该法在反映不同土壤矿化量高低、不同有机质矿化难易、不同土壤对加入有机物的矿化速率与间歇淋洗法有同样功效；两种培养方法32d的矿化量也有密切线性关系。 |
| 关键词: 氮素矿化，连续淹水培养，间歇淋洗 |
| DOI： |
| 分类号:S158.2 |
| 基金项目:国家自然科学基金资助项目（39770425和49890330） |
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| Soils Nitrogen Mineralization Processes underContinuously Waterlogged Incubation Conditions |
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| Abstract: |
| Under continuously waterlogged incubation conditions, soil samples were
taken for determ ination of mineralized N at an interval time without leaching during the
incubated period to study the mineralization processes of soils organic N. The results
showed that as compared with the mineralized N by intermittent leaching, the N mineralization processes of this procedure were much slow, and the cumulatively mineralized N
became less and decreased obviously when reached a certain extent.However, the continuously waterlogged incubation played the same function as the intermittent leaching procedure in reflection of soils mineralized N level,mineralization degree and rate of different organicmatter added to soils with different fertilities. In addition, them ineralized N
amounts during 32 days incubation by the two procedures were linearly related closely. |
| Key words: N mineralization,continuously waterlogged incubation,intermittent leaching of mineralized N |
