土壤与作物2024，Vol.13Issue(2)：165-172,8.DOI:10.11689/sc.2023071401
松嫩平原不同耕地土壤剖面的有机质及腐殖物质分布特征对比研究
Comparative study on the distribution of soil organic matter and humic substances in the profile of different cultivated soils in Songnen Plain
摘要
Abstract
Cheronzem,black soil(thin layer),black soil(thick layer)and aeolian soil were selected to study the distribution of soil organic carbon(SOC),humic acid(HA),fulvic acid(FA)and humin(HM)content,which is of significance to accurately assess the soil quality and ability of C sequestration in those farming soils.Compared to topsoil(0-20 cm),SOC in 80-100 cm of cheronzem,black soil(thin layer),black soil(thick layer)and aeolian soil decreased by 21.7%,26.9%,41.4%,23.6%,while pH increased from 5.2,5.9,6.1,4.8 to 7.5,7.2,8.4,7.6 in cheronzem,black soil(thin layer),black soil(thick layer)and aeolian soil,respectively.HA content declined by 34.9%,40.4%,46.6%,11.4%in cheronzem,black soil(thin layer),black soil(thick layer)and aeolian soil,respectively.Similarly,FA decreased by 52.2%,36.2%,73.3%,59.0%,and HM decreased by 32.2%,18.3%,37.2%,30.7%(P<0.05).Interestingly,HA/FA ratio increased by 42.9%,161%,101%(P<0.05)from 0-20 cm to 80-100 cm in cheronzem,black soil(thick layer)and aeolian soil,respectively.However,△lgK of HA decreased by 20.6%,29.9%,34.9%,40.3%,while that of FA decreased by 21.8%,17.1%,21.8%,18.9%in cheronzem,black soil(thin layer),black soil(thick layer)and aeolian soil(P<0.05),respectively.SOC and humic substances uniformly decrease in different soil profiles,the average SOC,pH,humic substances and△lgK in black soil(thick layer)are higher than other three soils.关键词
土壤剖面/土壤腐殖物质/土壤有机质/分布Key words
soil profile/soil humic substance/soil organic carbon/distribution分类
农业科技引用本文复制引用
高纪超,朱平,李强,彭畅,张秀芝,焦云飞,高洪军,武俊男,杨洋..松嫩平原不同耕地土壤剖面的有机质及腐殖物质分布特征对比研究[J].土壤与作物,2024,13(2):165-172,8.基金项目
吉林省农业科学院(中国农业科技东北创新中心)基本科研经费项目(KYJF2023DX011) （中国农业科技东北创新中心）
科技部基础资源调查专项(2021FY100402). （2021FY100402）
