塔里木大学学报2023，Vol.35Issue(4)：88-96,9.DOI:10.3969/j.issn.1009-0568.2023.04.011
生物炭浓度对猪粪堆肥腐殖化和重金属钝化的影响
Response of biochar to improve humification and heavy metal passivation in pig manure compost
摘要
Abstract
Low humification and high heavy metal bioavailability are the main threats during soil utilization of pig manure organic fertil-izer.Therefore,this study was carried out to investigate the pathways of humification and heavy metal bioavailability reduction of pig manure compost by adding biochar,using pig manure compost mixed with different doses of biochar.The results showed that the opti-mal biochar addition ratios for Cu and Zn passivation in pig manure compost were 15% and 10%,respectively,and 15% biochar was recommended as the optimal amount of additive to promote humification of pig manure compost.Complexation of humic acid with Cu and Zn would promote the conversion of exchangeable and reducible Cu to oxidizable Cu,and the conversion of exchangeable Zn to re-ducible Zn and oxidizable Zn.In addition,20% biochar inhibited the inactivation of Cu and Zn by decreasing polysaccharide degrada-tion and conversion of aliphatic compounds.The results of this study will provide a basis for how the addition of biochar can reduce the risk of soil application of pig manure compost products.关键词
堆肥/生物炭/腐殖化/铜和锌Key words
composting/biochar/humification/Cu and Zn分类
农业科技引用本文复制引用
薛娇,王龙,张红美,张鸿琼,朱玉雄,周岭..生物炭浓度对猪粪堆肥腐殖化和重金属钝化的影响[J].塔里木大学学报,2023,35(4):88-96,9.基金项目
第一师阿拉尔市科技计划项目"生物质热解产物耦合生物发酵制备有机肥技术"(2022TF02) （2022TF02）
第三师图木舒克市科技计划项目"农业剩余物好氧堆肥技术研发及试验示范"(KY2022GG03) （KY2022GG03）
