Nitrate Nitrogen Content Characteristics in Groundwater of Typical Planting Areas in Liao River Basin  

辽河流域典型种植区地下水硝态氮含量特征分析（英文）

作　　者：牛世伟[1] 宫亮[1] 蔡广兴[1] 何志刚[1] 陈玥[1] 刘子琪[1] 隋世江[1] 

机构地区：[1]辽宁省农业科学院植物营养与环境资源研究所,辽宁沈阳110161

出　　处：《Agricultural Science & Technology》2016年第1期204-208,共5页农业科学与技术（英文版）

基　　金：Supported by Agricultural Eco-environment Protection Program of Ministry of Agriculture(2110402-201258)~~

摘　　要：The contents of nitrate nitrogen（NO-3-N） in underground water from typical planting areas in Liao river basin were analyzed, so as to provide theoretical basis for rational fertilization and effectively prevent the NO-3-N content from exceeding standard. The results showed that difference of the contents of NO-3-N in groundwater from different typical planting areas was significant. The highest content of NO-3-N in underground water was 37.4 mg/L from flower-growing region, then 22. 3 mg/L from maize-growing region, 21.9 mg/L from vegetable-growing region, and the lowest content of NO-3-N in underground water was 19.2 mg/L from rice-growing region. Except rice-growing region, the contents of NO-3-N in underground water of the samples in all planting areas were exceeding standard limit; potential health risk still existed in rice-growing region. Accordingly 12.5%-87.5%, 9.4%-75.5%, 17.9%-58.9% and 21.4%-96.0% of the samples were exceeding standard limit in maize growing region, rice-growing region, vegetable-growing region and flower-growing region. The contents of NO-3-N in under-groundwater before the rainy season was higher than that of NO-3-N in under-groundwater after the rainy season at the same depth of the well.以辽河流域典型种植区为研究区域,对其地下水硝态氮含量进行分析,为合理施肥及有效防控种植区地下水硝态氮含量超标提供理论依据。结果表明,辽河流域不同典型种植区地下水硝态氮含量差异明显,具体表现为花卉种植区（37.4 mg/L）〉玉米种植区（22.3mg/L）〉蔬菜种植区（21.9 mg/L）〉水稻种植区（19.2 mg/L）,各典型种植区地下水硝态氮含量除水稻种植区外都超标,但水稻种植区地下水硝态氮含量变异系数较大,有超标的风险;地下水硝态氮含量超标率差异也较明显,其中玉米种植区超标率为12.5%~87.5%,水稻种植区为9.4%~75.5%,蔬菜种植区为17.9%~58.9%,花卉种植区为21.4%~96.0%。另外,对于同一井深,不同种植区地下水硝态氮含量总体均表现为雨季前〉雨季后。

关 键 词：Liao river basin Planting area Underground water Nitrate nitrogen 

分 类 号：P641.3[天文地球—地质矿产勘探]