| 施灌沼肥对土壤氨挥发和氮素下渗规律的影响 |
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| 引用本文： | 王忠江,蔡康妮,王丽丽,王光远,李文哲.施灌沼肥对土壤氨挥发和氮素下渗规律的影响[J].农业机械学报,2014,45(5):139-144. |
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| 作者姓名： | 王忠江 蔡康妮 王丽丽 王光远 李文哲 |
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| 作者单位： | 东北农业大学;东北农业大学;东北农业大学;东北农业大学;东北农业大学 |
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| 基金项目： | “十二五”国家科技支撑计划资助项目(2011BAD15B04)、黑龙江省教育厅科学技术研究项目(12511045、12511048)和黑龙江省博士后科研启动基金资助项目(LBH－Q10148) |
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| 摘 要： | 为探讨施灌沼肥对土壤氨挥发和氮素下渗的影响,在室温条件下,采用土柱模拟试验,系统研究沼肥不同施用量和不同施用深度对土壤表面的NH3挥发及土壤垂直剖面上的总氮、NH+4-N、NO-3-N下渗的影响规律。结果表明:表施沼肥时,土壤表面的NH3挥发累积量和挥发的延续时间均随沼肥施用量的增加而增加;土壤垂直剖面上的含水率、总氮和NH+4-N均主要集中在表层土壤,而NO-3-N可迁移至较深层土壤。底施沼肥时,NH3挥发累积量随着沼肥施用深度的增加而减少,施用深度为10 cm时便可有效减少沼肥的NH3挥发损失;同时土壤垂直剖面上的含水率和总氮、NH+4-N、NO-3-N质量比的最高点均与沼肥施用深度呈显著正相关。
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| 关 键 词： | 氮素 沼肥 施用量 施用深度 |
| 收稿时间： | 2014/1/10 0:00:00 |
Influence of Biogas Slurry Application on Ammonia Volatilization and Nitrogen Infiltration |
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| Wang Zhongjiang,Cai Kangni,Wang Lili,Wang Guangyuan and Li Wenzhe.Influence of Biogas Slurry Application on Ammonia Volatilization and Nitrogen Infiltration[J].Transactions of the Chinese Society of Agricultural Machinery,2014,45(5):139-144. |
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| Authors: | Wang Zhongjiang Cai Kangni Wang Lili Wang Guangyuan and Li Wenzhe |
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| Institution: | Northeast Agricultural University;Northeast Agricultural University;Northeast Agricultural University;Northeast Agricultural University;Northeast Agricultural University |
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| Abstract: | In order to investigate the law of ammonia volatilization and nitrogen infiltration in the process of biogas slurry application, the influence rules of different application rate and depth of biogas slurry on the ammonia volatilization of the soil surface and the infiltration of total nitrogen, ammonia nitrogen and nitrate nitrogen in vertical soil profile were explored systematically by soil column experiments at room temperature. The experimental results showed that the total ammonia volatilization of the soil surface and the duration of volatilization were all positively correlated with biogas slurry application rate. The moisture content, total nitrogen and ammonia nitrogen in vertical soil profile were mainly distributed in topsoil. But the nitrate nitrogen had migrated to deep layer soil with the water infiltration of biogas slurry. The total ammonia volatilization of the soil surface decreased with the increase of biogas slurry application depth when the biogas slurry was used as basic fertilizer. The ammonia volatilization rate of biogas slurry could be effectively reduced when the biogas slurry application depth was ten centimeters. And the peaks of total nitrogen, ammonia nitrogen and nitrate nitrogen in vertical soil profile were all positively correlated with biogas slurry application depth. |
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| Keywords: | Nitrogen Biogas fertilizer Application rate Application depth |
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