中国农业科技导报2025，Vol.27Issue(4)：169-178,10.DOI:10.13304/j.nykjdb.2023.0721
炭基猪粪肥对叶用甘薯产量及土壤Pb、Cd钝化效果的影响
Effects of Combined Application of Organic Pig Manure Fertilizer Combined with Biochar on Pb、Cd Passivation of Leaf Sweet Potato and Soil
摘要
Abstract
In order to relieve the heavy metal pollution of soil caused by prolonged utilization of organic pig manure fertilizer in vegetable cultivation,a long-term positioning experiment was used to investigate the impact of biochar combined with pig manure organic fertilizer and chemical fertilizer on the accumulation of cadmium(Cd)and lead(Pb)in both soil and plant biomass,as well as alternations in the speciation of Pb ions within the soil matrix.3 gradients of organic fertilizer treatments including 25%(L),50%(M)and 100%(H),and 4 biochar treatments including 0%(B0),3%(B1),6%(B2),9%(B3)were designed.The results showed that there was a significant interaction between the organic fertilizer application rate and the proportion of biochar in relation to leaf sweet potato yield and soil Pb content(P<0.05).The treatments with L and H amount of organic fertilizer with B3 biochar had the highest yield of leaf sweet potato.The B1H and B3L treatments significantly decreased the cumulative Pb content of leaf sweet potato with 31.5%and 37.6%.With the increase of biochar amount,the M treatment decreased the cumulative Cd content of leaf sweet potato.Combined application of organic fertilizer and biochar induced a shift in the chemical forms of Pb within the soil,promoting the transformation of Pb from an acid-extraction and reducible state,which as high bioavailability,to an oxidizable and residue state with reduced bioavailability.In conclusion,combined application of organic fertilizer and biochar could increase the yield of leaf sweet potato,reduce the heavy metal pollution caused by long-term application of organic fertilizer,and improve the soil quality.关键词
农业废弃物/畜禽粪便/重金属形态/土壤修复/金属钝化Key words
agricultural waste/animal waste/heavy metal form/soil remediation/passivation分类
农业科技引用本文复制引用
刘岑薇,叶菁,林怡,李艳春,王义祥..炭基猪粪肥对叶用甘薯产量及土壤Pb、Cd钝化效果的影响[J].中国农业科技导报,2025,27(4):169-178,10.基金项目
福建省省属公益类科研院所科研专项(2023R1062) （2023R1062）
福建省农科院协同创新工程项目(XTCXGC2021010). （XTCXGC2021010）
