| 胡伟,向建华,向言词,周练,陈燕.氮掺杂碳纳米粒子对红壤中氮损失及盐基离子的影响[J].农业环境科学学报,2017,36(1):143-149. |
| 氮掺杂碳纳米粒子对红壤中氮损失及盐基离子的影响 |
| Effect of adding nitrogen-doped carbon nanoparticles(N-CNPs) on soil nitrogen loss and base irons in red soil |
| 投稿时间：2016-09-09 |
| DOI：10.11654/jaes.2016-1169 |
| 中文关键词: 氮掺杂碳纳米粒子 红壤 氮素损失 盐基饱和度 |
| 英文关键词: nitrogen-doped carbon nanoparticles(N-CNPs) red soil nitrogen loss base saturation |
| 基金项目:国家自然科学基金青年科学基金项目（31401943） |
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| 中文摘要: |
| 采用室内模拟装置淋溶土柱的方法，研究了氮掺杂碳纳米粒子（N-CNPs）配施尿素对红壤中尿素氮损失和土壤盐基离子的影响。结果表明：N-CNPs伴随尿素施入红壤后，在pH4.38的模拟酸雨多次淋溶条件下，能显著降低红壤氮素损失率；氮素损失率与N-CNPs的施用量呈正相关，15‰N-CNPs配施尿素处理总氮损失率仅为单施尿素处理的49.45%；5‰N-CNPs用量所表现出的氮素损失率与5%双氰胺（DCD）处理结果相近。N-CNPs施用后，土壤交换性阳离子淋失量降低，具体表现为Ca2+ > Mg2+ > Na+ > K+，pH值和盐基饱和度（BS）升高，且与N-CNPs用量呈显著正相关（P<0.05）。这些结果表明，土壤pH值和BS的改善可能是N-CNPs施用于红壤后引起土壤氮素淋失降低的原因之一。 |
| 英文摘要: |
| Indoor simulated leaching approach of soil column was used to study effects of nitrogen-doped carbon nanoparticles(N-CNPs)with urea on nitrogen loss and base irons from red soils. The results showed that the rate of nitrogen loss decreased with the increased of N-CNPs after the red soils were leached with simulated acid rain 4.38 in pH, and the nitrogen loss rate under 15‰ N-CNPs treatment was only 49.45 percent of the urea treatment. After leaching, the rate of nitrogen loss was no significant different between 5‰ N-CNPs treatment and 5% DCD treatment. As applying N-CNPs, the amount of exchangeable bases in leaching water was lower than that in the CK1 treatment, the content was characterized by Ca2+ > Mg2+ > Na+ > K+, the base saturation and the soil pH were decreased, and there was a positive correlation between base saturation and the application content of N-CNPs. The result of correlation analysis showed that the applying of N-CNPs was the main reason which reducing nitrogen loss by improving of the base saturation and the soil pH value. |
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