| 土壤易矿化有机态氮和微生物态氮作为土壤氮素生物有效性指标的评价 |
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| 引用本文： | 宋建国,林杉,吴文良,毛达如.土壤易矿化有机态氮和微生物态氮作为土壤氮素生物有效性指标的评价[J].生态学报,2001,21(2):290-294. |
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| 作者姓名： | 宋建国 林杉 吴文良 毛达如 |
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| 作者单位： | 1. 中国科学院生态环境研究中心,
2. 中国农业大学资源与环境学院, |
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| 基金项目： | 国家自然科学基金资助项目(39630070和49771052) |
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| 摘 要： | 通过盆栽试验研究了土壤易矿化有机态氮和土壤微生物态氮与土壤净矿化氮及植物吸氮量之间的关系。结果表明，种植前土壤易矿化有机态氮和土壤微生物态氮以及种植前后土壤易矿化有机态氮的变化量均与土壤氮素净矿化量和植物吸氮量之间存在显著的相关性。在盆栽试验条件下，土壤易矿化有机态氮和种植前土壤微生物态氮能够较好地反映土壤氮素的矿化和供应能力，可以作为土壤氮素的生物有效性指标。
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| 关 键 词： | 易矿化有机态氮 微生物态氮 生物有效性 |
| 文章编号： | 1000-0933(2001)02-0290-05 |
| 收稿时间： | 2000/1/12 0:00:00 |
| 修稿时间： | 2000/6/12 0:00:00 |
Evaluation of soil easily mineralizable nitrogen and microbial biomass nitrogen for biological available index |
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| SONG Jianguo,LIN Shan,WU Wenliang and MAO Daru.Evaluation of soil easily mineralizable nitrogen and microbial biomass nitrogen for biological available index[J].Acta Ecologica Sinica,2001,21(2):290-294. |
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| Authors: | SONG Jianguo LIN Shan WU Wenliang and MAO Daru |
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| Affiliation: | Research Center for Eco Environmental Sciences; Chinese Academy of Sciences; Beijing; China |
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| Abstract: | There was a significant correlation between soil easily mineralizable nitrogen and microbial biomass nitrogen measured before planting with the net nitrogen mineralization and plant nitrogen uptake. The significant relationship was also found between the difference of easily mineralizable nitrogen before and after planting with soil net nitrogen mineralizable and plant nitrogen uptake. It is concluded that the soil easily mineralizable nitrogen and microbial biomass nitrogen can be taken as the biological available index for soil nitrogen mineralization and availability in the pot experiment. |
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| Keywords: | soil easily mineralizable nitrogen microbial biomass nitrogen biological available index |
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