| 温裕宏,冯迪,孔梦如,万云星,朱启林,伍延正,但小倩,汤水荣,AHMED S Elrys,张金波,孟磊.铜与双氰胺配施对土壤硝化作用和N2O排放的影响[J].农业环境科学学报,2026,45(2):526-536. |
| 铜与双氰胺配施对土壤硝化作用和N2O排放的影响 |
| Effects of copper and dicyandiamide on soil nitrification and N2O emission |
| 投稿时间：2025-03-20 修订日期：2025-06-16 |
| DOI：10.11654/jaes.2025-0261 |
| 中文关键词: 铜 双氰胺硝化抑制剂 硝态氮 N2O排放 |
| 英文关键词: copper dicyandiamide nitrification inhibitor NO3--N N2O emission |
| 基金项目:国家自然科学基金项目（42067008，41701267）；海南省自然科学基金高层次人才项目（320RC493） |
| 作者 | 单位 | E-mail | | 温裕宏 | 海南大学热带农林学院, 海口 570228 | | | 冯迪 | 海南大学热带农林学院, 海口 570228 | | | 孔梦如 | 海南大学热带农林学院, 海口 570228 | | | 万云星 | 海南大学热带农林学院, 海口 570228 | | | 朱启林 | 海南大学南繁学院, 海南 三亚 572025 | | | 伍延正 | 海南大学热带农林学院, 海口 570228 | | | 但小倩 | 海南大学热带农林学院, 海口 570228 | | | 汤水荣 | 海南大学南繁学院, 海南 三亚 572025 | | | AHMED S Elrys | 海南大学热带农林学院, 海口 570228 | | | 张金波 | 海南大学南繁学院, 海南 三亚 572025 | | | 孟磊 | 海南大学南繁学院, 海南 三亚 572025 | menglei94@sohu.com |
|
| 摘要点击次数: 526 |
| 全文下载次数: 387 |
| 中文摘要: |
| 为探究双氰胺（DCD）硝化抑制剂配施铜（Cu）对土壤硝化作用及N2O排放的影响，本研究采用2种不同有机质水平土壤，通过室内培养试验，分别设置尿素（U）、尿素配施DCD（U_DCD）、尿素配施DCD并添加10 mg·kg-1 Cu（U_DCD_Cu1）和200 mg·kg-1Cu（U_DCD_Cu2）处理。结果表明：与 U_DCD 处理相比，高、低有机质土壤 U_DCD_Cu1处理 NO3--N含量分别显著降低 30.79% 和提高5.37%（P<0.05）。相比于U_DCD处理，U_DCD_Cu2处理土壤N2O排放量显著提高25.48%（高有机质土壤）和11.00%（低有机质土壤）。DCD与Cu的协同效应受土壤有机质含量和Cu含量的调节：低含量Cu在高有机质土壤中增强了DCD的抑制效果，在低有机质土壤中则表现为削弱作用，两种Cu含量均降低了DCD抑制N2O排放的效果。研究揭示了在不同有机质水平土壤下外源添加Cu对DCD调控氮素流失的作用机制，为减少土壤N2O排放提供理论依据。 |
| 英文摘要: |
| To investigate the effect of dicyandiamide（DCD）nitrification inhibitor with copper（Cu）application on soil nitrification and N2O emission. In this study, two soils with different organic matter levels were set up for urea（U）, urea with DCD（U_DCD）, urea with DCD and addition of 10 mg · kg-1 Cu（U_DCD_Cu1）and 200 mg · kg-1 Cu（U_DCD_Cu2）treatments, respectively, in indoor incubation tests. The results showed that NO3--N content was significantly reduced by 30.79% and increased by 5.37%（P<0.05）in the U_DCD_Cu1 treatment compared to the U_DCD treatment in high and low organic matter soils, respectively. Compared with the U_DCD treatment, soil N2O emission was significantly increased by 25.48%（high organic matter）and 11.00%（low organic matter）in the U_DCD_Cu2 treatment. The synergistic effect of DCD and Cu was regulated by the soil organic matter content and Cu content：low content of Cu enhanced the inhibitory effect of DCD in high organic matter soils, and showed a weakening effect in low organic matter, and both Cu content both reduced the inhibition effect of DCD on N2O emission. This study reveals the mechanism of exogenously added Cu on DCD regulation of nitrogen loss in soils with different organic matter levels, and provides a theoretical basis for reducing soil N2O emissions. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
|
|
|
