土壤2023，Vol.55Issue(6)：1289-1296,8.DOI:10.13758/j.cnki.tr.2023.06.016
外加生物质炭对不同利用方式紫色土反硝化过程的影响
Effects of Biochar on Denitrification of Purple Soils Under Different Land Use Types
摘要
Abstract
The emission rates of N2O and N2 and denitrification rates of purple soils under four land use types(tea garden,orchard,woodland,and cropland),as well as their relations with soil pH and organic matter content were examined by using the anaerobic culture-15N labeling method.The results showed that the emission rates of N2O and N2 and denitrification rates were tea garden>cropland>orchard>woodland.The emission rates of N2O and N2 and denitrification rate were reduced as soil pH increased(P<0.01)and had the significant positive correlation with soil organic matter content(P<0.05).With the addition of biochar,the emission rate of N2 and denitrification rate were both increased,while the changes in N2O emission rate were affected by land use type,which changed insignificantly in tea garden,significantly decreased in orchard and cropland(P<0.05),and significantly increased in woodland(P<0.05).In conclusion,the denitrification process of purple soil under different land use types is mainly influenced by soil pH and organic matter content,and can be regulated by the addition of biochar.关键词
土地利用方式/反硝化作用/生物质炭/N2O排放/紫色土Key words
Land use types/Denitrification/Biochar/N2O emission/Purple soil分类
农业科技引用本文复制引用
陈小凤,赵心玥,何晓茜,兰婷..外加生物质炭对不同利用方式紫色土反硝化过程的影响[J].土壤,2023,55(6):1289-1296,8.基金项目
国家自然科学基金面上项目(42077096)和四川省科技创新人才项目(2021JDRC0034)资助. （42077096）
