灌溉排水学报2017，Vol.36Issue(7)：71-74,4.DOI:10.13522/j.cnki.ggps.2017.07.013
生物炭对砂壤土氮素淋失的影响试验研究
Effect of Biochar on Nitrogen Leaching in a Sandy Loam Soil
摘要
Abstract
Column experiments were conducted in laboratory in attempts to study the effect of biochar on pH, EC and leaching of nitrogenin a sandy-loam soil. Five biochar application rates were examined:0％(CK), 1％(T1), 2％(T2), 4％(T3) and 6％(T4). The results showed that pH and electrical conductivity of the soil increased as the ap-plied biochar increased,with electrical conductivity of soil under T1—T4 treatments increasing by 2.79％, 10.88％, 11.3％and 12.50％respectively, compared with the CK. The concentration of leached nitrogen and the accumulated leached nitrogen decreased as the applied biochar increased, with the mass of the leached nitrogen in the T1—T4 treatments reducing by 1.74％, 13.35％, 14.01％and 17.31％, respectively, compared with the CK. In summary, biochar alerted the physical and chemical properties of soil, thereby reducing nitrogen leachingand hence the risk of groundwater pollution by non-point contaminant sources in agroecosystems.关键词
生物炭/砂壤土/氮素淋失/吸附效应Key words
biochar/sandy-loam soil/nitrogen leaching/adsorption effect分类
农业科技引用本文复制引用
王凡,屈忠义,李昌见,贾斌,孙贯芳..生物炭对砂壤土氮素淋失的影响试验研究[J].灌溉排水学报,2017,36(7):71-74,4.基金项目
国家自然科学基金项目(41161038) （41161038）
内蒙古自治区2013年科技厅应用项目(20130425) （20130425）
