猪粪施用对农田土壤肥力及其特征重金属的影响  

Effects of Pig Manure Application on Farmland Soil Fertility and its Characteristic Heavy Metals

作　　者：汪楠楠[1,2] 潘芳慧 张艳华 罗洁 王友保 WANG Nannan;PAN Fanghui;ZHANG Yanhua;LUO Jie;WANG Youbao(School of Ecology and Environment,Anhui Normal University,Wuhu 241002,China;School of Public Health,Wannan Medical College,Wuhu 241002,China)

机构地区：[1]安徽师范大学生态与环境学院,安徽芜湖241002 [2]皖南医学院公共卫生学院,安徽芜湖241002

出　　处：《安庆师范大学学报（自然科学版）》2024年第2期107-111,共5页Journal of Anqing Normal University(Natural Science Edition)

基　　金：国家自然科学基金(31700476);安徽省高校协同创新项目(GXXT-2020-075);安徽省高校自然科学研究项目(KJ2021A0853)。

摘　　要：为探讨猪粪施用对农田土壤肥力的影响及其特征重金属的污染风险,对安徽省怀远县一家规模化养猪场的饲料、猪粪及周边农田土壤进行了采样分析,并以未施用猪粪的农田土壤作为对照,研究了施用猪粪后农田土壤相关指标的变化。结果表明,施加猪粪能够改善土壤理化性质,提高土壤肥力。施粪土的有机质、电导率和pH相较对照土显著升高,且土壤酶活性也有所提高。然而,由于猪饲料添加剂的使用,猪粪中的铜、锌含量分别是欧盟有机耕种标准的1.96倍和1.31倍,因此施用猪粪会显著增加土壤中铜、锌含量,甚至达到轻污染水平。曲线回归分析发现,当猪粪的施用量控制在15.58 t·hm^(-2)以下时,不会造成土壤重金属污染。The feed,pig manure and farmland soil surrounding a large-scale pig farm in Huaiyuan County,Bengbu City,Anhui Province,were sampled and analyzed in this paper to discuss the impacts of pig manure on farmland soil fertility and the pollution risk of its characteristic heavy metals.The changes in related indexes of the farmland soil with pig manure were studied,while the farmland soil without pig manure was used as a control.The results showed that the physical and chemical properties and fertility of the soil could be improved by applying pig manure.The organic matter,electrical conductivity and pH of the soil with pig manure were significantly higher than that of the control,and the soil enzyme activities were also increased by pig manure application.Due to the use of additives in pig feed,the content of copper and zinc in pig manure was 1.96 times and 1.31 times that of EU organic farming standard,respectively.Therefore,the application of pig manure would significantly increase the content of copper and zinc in soil,and even make it reach the level of light pollution.Through curve regression analysis,when the application amount of pig manure is controlled below 15.58 t·hm-2,it will not cause heavy metal pollution in the soil.

关 键 词：猪粪 土壤肥力 特征重金属 污染风险评估 

分 类 号：X171.5[环境科学与工程—环境科学]