土壤与作物2025，Vol.14Issue(4)：427-439,13.DOI:10.11689/sc.2025040301
富铁有机肥改良轻度苏打盐碱地的效应
Effects of iron-rich organic fertilizers on the improvement of light soda saline-alkali soil
摘要
Abstract
To address the problems of high pH,high salt content,and low soil nutrient effectiveness in light saline-alkali soil in Da'an City,Jilin Province,a pot experiment with rice planting was conducted to investigate the effect of organic fertilizer in amelio-rating light soda saline-alkali soil.Three treatments were implemented,i.e.no organic fertilizer as a blank control(CK),ordinary organic fertilizer(M0),and organic fertilizer(M1)prepared with 1%biochar loaded with iron nano-particles(BC-FeNPs).All organic fertilizers were applied at 5%of the soil weight.The results show that compared with CK,the application of organic fertilizer signifi-cantly increases the total organic carbon content in light saline-alkali soil by 115%.The M0 and M1 treatments increase the content of iron-bound organic carbon(Fe-OC)by 25%and 175%,respectively.Compared with CK,BC-FeNPs organic fertilizer increases the Fe-OC/TOC ratio from 30.0%to 39.0%while M0 treatment decreases the Fe-OC/TOC ratio.Compared with M0,the addition of BC-FeNPs organic fertilizer significantly enhances the activities of soil invertase,alkaline phosphatase,and catalase.Compared with CK,the addition of BC-FeNPs organic fertilizer significantly increases the richness of soil bacterial communities and the relative abundances of Proteobacteria,Bacteroidota,and Actinobacteriota.The relative abundances of the above-mentioned phyla are posi-tively correlated with soil available nutrient content as well as soil enzyme activities.The organic fertilizer added with 1%BC-FeNPs can significantly increase the total organic carbon content,improve enzyme activity and bacterial community richness by promoting the formation of Fe-OC,thus demonstrating potential for the improvement of saline-alkali soil.关键词
苏打盐碱地改良/富铁有机肥/铁结合有机碳/铁氧化物/土壤细菌Key words
soda saline-alkaline soil improvement/Fe-rich organic fertilizer/Fe-OC/iron oxide/soil bacteria分类
农业科技引用本文复制引用
邵玟玥,于锐,赵光影,吴霞,杨文聪,袁宁,梁梦月,罗那那..富铁有机肥改良轻度苏打盐碱地的效应[J].土壤与作物,2025,14(4):427-439,13.基金项目
中国科学院科研项目 （）
吉林省自然科学基金(YDZJ202301ZYTS232). （YDZJ202301ZYTS232）
