家畜生态学报2025，Vol.46Issue(10)：73-80,8.DOI:10.3969/j.issn.1673-1182.2025.10.011
改性牛粪生物炭对土壤-青贮玉米体系中镉富集转运的阻控作用
Control of Cadmium Enrichment and Translocation in Soil-silage Corn System Using Modified Cattle Manure Biochar
摘要
Abstract
To study the impact of passivator on the enrichment and transport of heavy metal Cd in a neutral soil-silage maize system,a pot experiment was conducted using manganese dioxide-amino modified cattle manure biochar(MNB)as the passivator,with northeastern black soil and silage maize as the exper-imental materials.The objective was to clarify the inhibitory effects of different application rates of MNB on Cd enrichment and transportation within the soil-silage maize system,aiming to provide a theoretical basis for mit-igating soil Cd pollution risks and the resource utilization of cow dung.The results showed that:(1)key soil indi-cators,such as pH,EC and OM,increased significantly with the application of MNB(P＜0.05).An application rate of 2.0％demonstrated the most effective enhancement of soil nutrient indicators.Compared to the CK treat-ment,soil pH increased by 1.70％～3.67％,EC increased by 46.09％～56.44％,OM increased by 14.45％～18.77％,alkaline dissolved nitrogen increased by 1.51～3.18 times,available phosphorus increased by 0.47～1.73 times,and available potassium increased by 1.14～1.48 times.(2)As the Cd concentration in the soil increased,the effects of MNB application on the forms of Cd in the soil were consistently observed.The contents of weak acid-extractable,reducible and oxidisable Cd forms all decreased with increasing MNB application rates,while the content of residual state increased,with increases of 9.14％,22.70％and 29.79％,respectively,all showing sig-nificant differences(P＜0.05).(3)Comparing the Cd5B0 and Cd5B2 treatments,MNB application resulted in re-ductions of Cd content in various parts of silage maize(stem,leaves,and seeds)by 33.73％,17.50％and 35.92％,respectively.The application of MNB significantly inhibited the enrichment and transport capacity of Cd in the soil-silage maize system.Additionally,there was a significant negative correlation(P＜0.05)between soil nutrient indexes and Cd content in different parts of silage maize.Improving soil nutrient indicators can,to some extent,reduce the bioavailability of Cd in soil,thereby indirectly decreasing the migration capacity of Cd within the soil-silage maize system.The results of the study revealed that the application of MNB can enhance soil nutrient content and reduce the bioavailability of Cd in the soil,significantly inhibiting the enrichment and transport of Cd in the soil-silage maize system.关键词
改性牛粪生物炭/青贮玉米/土壤/镉/富集系数/转运系数Key words
modified cattle manure biochar/corn silage/soil/cadmium/enrichment factor/transloca-tion factor分类
农业科技引用本文复制引用
王振,张淑芬,付龙,丁昕颖,马珊珊,白长胜,赵金波,李伟..改性牛粪生物炭对土壤-青贮玉米体系中镉富集转运的阻控作用[J].家畜生态学报,2025,46(10):73-80,8.基金项目
黑龙江省农业科技创新跨越工程重点攻关项目(CX23GG07) （CX23GG07）
黑龙江省农业科学院畜牧兽医分院自拟课题(ZNKT-202202) （ZNKT-202202）
齐齐哈尔市创新激励项目(CNYGG-2024018) （CNYGG-2024018）
