土壤2024，Vol.56Issue(6)：1184-1191,8.DOI:10.13758/j.cnki.tr.2024.06.005
腐殖酸-水铁矿复合物提升新整治耕地土壤有机碳的效应
Effect of Humic Acid-ferrihydrite Complex on Soil Organic Carbon in Newly Reclaimed Soils
摘要
Abstract
The different enhancement effects of straw(S),biochar(B),woody peat humic acid(HA)and woody peat humic acid-ferrihydrite complex(HA-Fe)on soil organic carbon content in newly reclaimed red soil,coastal saline soil and loessal soil were explored through an incubation experiment.The results showed that during the entire incubation period,all four organic materials significantly increased the total organic carbon(TOC)content of the three soils.However,after 100 days of incubation,the enhancement effects of HA,B and HA-Fe were 3.1-4.3,3.1-3.8 and 3.0-4.0 times of S,respectively.After 360 days of incubation,the enhancement effects of HA,B and HA-Fe were 3.0-7.1,2.9-6.2 and 2.9-6.3 times of S,respectively.The enhancement effects of B and HA on soil mineral-associated organic carbon(MAOC)were weaker than that of S.Compared to S,B and HA,HA-Fe significantly increased both TOC and MAOC.However,its enhancement effect on soil readily oxidizable carbon was much smaller than that of S.This study reveals that HA-Fe has a stronger ability to rapidly enhance soil organic matter of newly reclaimed lands,but it is better to apply with liable organic materials to more quickly enhance soil active organic matter and mineral-associated organic matter.关键词
木本泥炭/土壤有机质/矿物结合态有机碳/固碳效率Key words
Woody peat/Soil organic matter/Mineral-associated organic carbon/Carbon sequestration efficiency分类
农业科技引用本文复制引用
郑延云,余正洪,张佳宝,张丛志,马东豪,陈林,周桂香..腐殖酸-水铁矿复合物提升新整治耕地土壤有机碳的效应[J].土壤,2024,56(6):1184-1191,8.基金项目
中国科学院战略性先导科技专项(XDA0440000)和国家重点研发计划项目(2022YFD1500903,2022YFD1500502)资助. （XDA0440000）
