云南化工2026，Vol.53Issue(9)：48-53,6.DOI:10.3969/j.issn.1004-275X.2026.09.10
酸雨模拟下生物炭对果园土壤氮磷溶出特征及形态的影响研究
Effects of Biochar on the Characteristics and Forms of Nitrogen and Phosphorus Leaching from Orchard Soil under Acid Rain Simulation
骆秋霖 1余正官 1曾园钦 1李恒瑾 1陈隆梦 1王应兰1
作者信息
- 1. 昭通学院 化学化工学院,云南 昭通 657000
- 折叠
摘要
Abstract
To investigate the regulatory effects and mechanisms of biochar on nitrogen and phosphorus leaching in orchard soils under acid rain stress,an indoor soil column leaching simulation experiment was conducted with 12 treatment groups(including blank control,single fertilizer application,single biochar application,and combined fertilizer-biochar application under different pH acid rain conditions).The study examined the impact of biochar on nitrogen and phosphorus leaching characteristics in orchard soils under acid rain simulation.Results showed:① Acid rain significantly exacerbated nitrogen and phosphorus leaching in orchard soils,with higher acidity leading to greater leaching risk.The leaching amounts of NO-3-N、NO-2-N and NH+4-N linearly increased with decreasing pH of acid rain,while phosphorus leaching(DIP,DTP,TP)continu-ously increased with decreasing pH.② Exogenous fertilization was the core driver of nitrogen and phosphorus leaching,with all forms of nitrogen and phosphorus leaching levels remaining low in the no-fertilization group.③ Biochar exhibited a significant"all-form"inhibition effect on ni-trogen and phosphorus leaching,with the most pronounced reduction observed under strong acidity(pH=3).The findings provide scientific ba-sis and technical support for efficient nitrogen and phosphorus management and agricultural non-point source pollution control in orchard soils under acidic rainfall conditions.关键词
酸雨模拟/生物炭/果园土壤/氮素/磷素/溶出特征Key words
Acid Rain Simulation/Biochar/Orchard Soil/Nitrogen/Phosphorus/Dissolution Characteristics分类
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骆秋霖,余正官,曾园钦,李恒瑾,陈隆梦,王应兰..酸雨模拟下生物炭对果园土壤氮磷溶出特征及形态的影响研究[J].云南化工,2026,53(9):48-53,6.
