生态学杂志2025，Vol.44Issue(8)：2531-2540,10.DOI:10.13292/j.1000-4890.202508.035
硝化抑制剂对喀斯特农业土壤氮素迁移的影响
Effect of nitrification inhibitors on nitrogen migration in karst agricultural soils
摘要
Abstract
Nitrification inhibitors play a critical role in the migration and transformation of nitrogen in agricultural soils.Using soil column simulations,we investigated the effects of different fertilization treatments on nitrogen trans-formation and leaching potential in typical yellow soil in a karst region.There were five treatments,including con-ventional nitrogen fertilizer,conventional nitrogen fertilizer with nitrification inhibitor DMPP,120％nitrogen ferti-lizer with nitrification inhibitor DMPP,80％nitrogen fertilizer with nitrification inhibitor DMPP,and conventional nitrogen fertilizer with nitrification inhibitor DMPP and phosphate fertilizer.The results showed that soil nitrification was inhibited by DMPP.Compared to the conventional fertilization condition,nitrate concentration was reduced by 34.8％±4.2％.The nitrogen reduction strategy(80％of the conventional fertilization amount)combined with DMPP application resulted in a 56.4％±6.1％decrease in nitrate leaching compared to conventional fertilization.The addi-tion of phosphate fertilizer increased nitrate concentration in the soil leachate by 56.2％±5.4％compared to the application of urea and DMPP alone,indicating that phosphorus addition has an inhibitory effect on the function of DMPP.In summary,DMPP application in karst regions can inhibit soil nitrification,effectively reduce nitrate leaching and the risk of groundwater nitrogen pollution,which is of great significance for water resource manage-ment and ecological environment protection in karst agricultural soils.关键词
岩溶/DMPP/减施氮肥/氮流失Key words
karst/DMPP/reduced nitrogen fertilizer application/nitrogen loss引用本文复制引用
时治宇,王晓丹,陆萌,毛菊,高云龙,马僖,岳甫均..硝化抑制剂对喀斯特农业土壤氮素迁移的影响[J].生态学杂志,2025,44(8):2531-2540,10.基金项目
第二次青藏高原综合科学考察研究项目(2019QZKK0601-3)、国家自然科学基金项目(41803022,42073076,42167067)和贵州省教育厅自然科学研究项目(黔教技[2023]034号)资助. （2019QZKK0601-3）
