| 玉米秸秆及其黑炭添加对黄绵土氮素转化的影响 |
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| 引用本文： | 刘 娇,高 健,赵 英.玉米秸秆及其黑炭添加对黄绵土氮素转化的影响[J].土壤学报,2014,51(6):1361-1368. |
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| 作者姓名： | 刘 娇 高 健 赵 英 |
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| 作者单位： | 西北农林科技大学资源环境学院,西北农林科技大学资源环境学院,西北农林科技大学资源环境学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 采用室内培养试验,研究在相同的土壤水分和施氮量条件下,不同碳源(玉米秸秆及其黑炭)添加对土壤无机氮转化和N2O排放的影响机制。结果表明,不同碳源(玉米秸秆和黑炭)的施加对氮素净矿化量的影响差异极显著(p0.01)。与直接施加玉米秸秆相比,施加黑炭增加了土壤硝态氮和铵态氮的含量,显著降低了土壤N2O排放量;施加黑炭后土壤无机氮浓度变化在整个培养期间较平缓,而施加秸秆后土壤氮转化在前两周较为剧烈。相较于添加秸秆,施加黑炭有利于减少温室气体N2O的排放。
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| 关 键 词： | 玉米秸秆 生物炭 氧化亚氮排放 氮转化 |
| 收稿时间： | 2013/9/23 0:00:00 |
| 修稿时间： | 3/6/2014 12:00:00 AM |
Effects of addition of both maize stalk and its biochar to loess soil on n transformations |
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| Liu Jiao,Gao Jian and Zhao Ying.Effects of addition of both maize stalk and its biochar to loess soil on n transformations[J].Acta Pedologica Sinica,2014,51(6):1361-1368. |
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| Authors: | Liu Jiao Gao Jian and Zhao Ying |
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| Affiliation: | Northwest A&F University,Northwest A&F University,Northwest A&F University |
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| Abstract: | A laboratory incubation experiment was conducted to investigate the effects of addition of both maize straw and its biochar to dryland soil on N transformations. Using the thermostatic incubation, our objectives are to evaluate influence of maize straw and its biochar adding on soil ammonium nitrate nitrogen transformation and N2O emission under the same soil water and nitrogen conditions. The results showed that there are significant differences in nitrogen mineralization after applying maize straw and its biochar. Compared with maize straw addition, the biochar addition increased soil NO3--N and NH4 -N contents, and decreased N2O emission; Soil nitrogen transformation was relatively slow after applying biochar during the whole incubation period, and it was more violent after applying biochar during the first two weeks. We considered biochar addition may be an effective measure in terms of carbon sequestration and reduction of greenhouse gas N2O emission. |
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| Keywords: | Maize straw Biochar N2O emissions N transformations |
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