南阳师范学院学报2026，Vol.25Issue(1)：34-41,8.
微塑料丰度与施氮量对土壤水氮运移特性的影响研究
Research on the Effects of Microplastic Abundance and Nitrogen Application Rate on Soil Water and Nitrogen Transport Characteristics
摘要
Abstract
To investigate the effects of microplastic abundance and nitrogen application rates on soil water nitrogen transport characteristics,a one-dimensional soil column simulation experiment was conducted indoors.The study examined the impact of two polyethylene microplastic abundances(low abundance 0.3%,A;high abundance 0.6%,B)and two nitrogen application rates(300,600 mg/L)on soil infiltration wet front,cumulative infiltra-tion volume,and nitrate nitrogen content,alongside two nitrogen-free treatments and a control group,totaling sev-en treatments.Simultaneously,soil profile moisture content was monitored.Soil moisture front advancement,cumu-lative infiltration volume,and nitrate nitrogen content were measured,while soil profile moisture content was mo-nitored and fitted to a moisture front advancement model and two primary infiltration models.Results indicated:under no nitrogen application,high microplastic abundance promoted soil water infiltration while low microplastic abundance slowed it;high nitrogen application generally enhanced infiltration,with low microplastic abundance showing superior infiltration capacity compared to high microplastic abundance,which exhibited stronger nitrogen retention;low nitrogen application generally inhibited infiltration.Low microplastic abundance exhibited greater infiltration inhibition than high abundance,yet demonstrated superior nitrogen retention capacity.The relationship between wetting front migration distance and time across treatments followed power-law functions,with both Kos-tiakov and Philip models effectively simulating cumulative infiltration under varying microplastic abundances and nitrogen application rates.关键词
微塑料/土壤水分入渗/硝态氮Key words
microplastics/soil infiltration/nitrate nitrogen分类
农业科技引用本文复制引用
JIANG Gengmin,ZHANG Hang,XU Jun,HAO Jiahou,LU Jing..微塑料丰度与施氮量对土壤水氮运移特性的影响研究[J].南阳师范学院学报,2026,25(1):34-41,8.基金项目
国家自然科学基金项目"活性污泥源抗菌肽的生成调控及作物抗病机制研究"(52500163) （52500163）
河南省科技攻关计划项目"基于覆膜进程控制的节水增效技术研究"(182102310838) （182102310838）
南阳师范学院大学生实践教学活动创新项目"微塑料及施氮量对土壤水氮运移特性的影响探究"(SPCP2024399) （SPCP2024399）
南阳师范学院STP项目"改性生物炭对豫南地区农田土壤水肥高效利用的影响研究"(2026STP008). （2026STP008）
