植物营养与肥料学报2012，Vol.18Issue(3)：637-644,8.
武汉市城郊区集约化露天菜地生产系统硝态氮淋溶迁移规律研究
Leaching and transport of nitrate in vegetable production systems in suburbs of Wuhan
摘要
Abstract
The nitrate（ NO3- ）contents of vegetable field soil, soil solution and well water were annually determined in suburbs of Wuhan, where are the typical open-air vegetable production systems. The results show that the average NO3--N content in 0-100 cm soil is 11.2 mg/kg and the content in 0-20 cm soil is 21.1 mg/kg. The NO3- content in soil solution at 60 cm depth is 27.5 rag/L, and the NO3- -N concentrations in well water are from 19.6 to 39. 8 mg/L. These results indicate that the nitrate leaching loss is serious in the vegetable soil, and theNO; lOSS -N content in well water is far more than the safe standard for drinking water. The amount of nitrate leaching has a direct relationship to the amount of nitrogen fertilizer and water input, the growth situation of vegetable crops and soil particle composition. Due to different soils have different particle composition, especially for the sandy soil, the groundwater may have suffered serious nitrate pollution although the crops could grow normally. This study could make contributions to scientific evaluation of the nitrate pollution of open-air vegetable field soil and groundwater.关键词
硝态氮/菜地/氮素淋失/地下水污染Key words
nitrate nitrogen/vegetable field/nitrogen leaching/underground water pollution分类
农业科技引用本文复制引用
崔敏,胡承孝,Di Hong Jie,孙学成,谭启玲,张木..武汉市城郊区集约化露天菜地生产系统硝态氮淋溶迁移规律研究[J].植物营养与肥料学报,2012,18(3):637-644,8.基金项目
农业部引进国际先进农业科学技术（948）项目 （）
国家“十一五”科技支撑计划项目（2008BADA7803）资助. （）
