生物炭添加对土壤反硝化产物比的影响研究进展  

Effect of Biochar Addition on the Ratio of Soil Denitrification Products:A Review

作　　者：高尚洁 刘杏认[1] 徐春英[1] 彭琴[2] GAO Shang-jie;LIU Xing-ren;XU Chun-ying;PENG Qin(Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101)

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081 [2]中国科学院地理科学与资源研究所,陆地表层格局与模拟重点实验室,北京100101

出　　处：《中国农业气象》2024年第7期777-785,共9页Chinese Journal of Agrometeorology

基　　金：国家自然科学基金项目(41773090,42177224)。

摘　　要：土壤反硝化作用是土壤氮素损失的重要途径,农业生产中大量施用氮肥导致土壤N_(2)O排放量增加,引发了温室效应等环境问题。同时土壤反硝化也是土壤N_(2)O还原的主要途径,因此调节土壤反硝化产物比N_(2)O/(N_(2)O+N_(2))是减少土壤N_(2)O排放的关键。本文基于国内外相关研究,就土壤反硝化产物比研究方法及其影响因素以及反硝化产物比对生物炭添加的响应机理进行归纳总结。结果表明,生物炭添加对土壤反硝化产物比的影响存在一定不确定性,生物炭添加能否有效调节反硝化产物比、减少N_(2)O排放受土壤理化性质、生物炭性质、施用量等因素的影响。基于以上研究现状,对未来完善反硝化产物研究方法、明确生物炭对反硝化产物比的定量影响及关键影响因素提出研究展望。Soil denitrification is an important pathway of soil nitrogen loss.The large amount of nitrogen fertilizer applied in agricultural production leads to the increase of soil N_(2)O emission,and it has caused environmental problems such as the enhanced greenhouse effect.At the same time,soil denitrification is also the main way of N_(2)O reduction,so controlling the ratio of soil denitrification products N_(2)O/(N_(2)O+N_(2))is the key to reduce soil N_(2)O emission.Based on a large quantity of relevant researches,this paper summarized the measurement methods and influencing factors of denitrification product ratio in soil and the mechanism of biochar addition affecting soil denitrification product ratio.The results showed that there was still existing uncertainty about the effect of biochar application on denitrification product ratio,and whether biochar addition could effectively regulate denitrification product ratio and reduce N_(2)O emission was affected by some influencing factors,such as soil physicochemical properties,biochar properties and application amount.Based on the above research status,the future prospects for improving the measurement methods of denitrification products and clarifying the quantitative effects of biochar addition denitrification products ratio and its key influencing factors were proposed.

关 键 词：生物炭 氧化亚氮还原 氮气 反硝化产物比 

分 类 号：S154.1[农业科学—土壤学]