安徽农业大学学报2018，Vol.45Issue(6)：1077-1084,8.DOI:10.13610/j.cnki.1672-352x.20190102.025
大沟蓄排工程对水体中氮磷浓度变化的影响
The effect of N and P concentration change under the main ditches storage and drainage project
摘要
Abstract
In order to study the alleviated influence on the pollution of surface water and groundwater in farmland by the impoundment of main ditchs, the nitrogen and phosphorus contents at different sections of Chezhegou had been observed, the impact of fertilization and precipitation in different months on the change process of N and P concentrations was analyzed, and the correlation analysis among different indexes was carried out. The results showed that: (1) TN concentration in surface water increased with rainfall, TN and NO3--N concentrations in groundwater had an obvious response with fertilization process under the condition of adequate rainfall. (2) In surface water, pH and nitrogen content existed a certain relationship, while TN, NO3--N and NO2--N had a good correlation. In contrast, pH and temperature had a weak correlation with nitrogen and phosphorus in groundwater, and NH4+-N had a difficult conversation with NO3--N but a strong linear relationship with TP. (3) The main ditches storage and drainage project could alleviate phosphorus loss effectively, while had a positive effect on reducing TN concentration in underwater in flood season. On the other hand, it had given a rise to phosphorus concentration in groundwater for a certain extent, so controlling TP discharge should be paid attention to during different farming and irrigation time in promotion area.关键词
地表水及地下水/氨氮污染物/降雨/施肥Key words
surface water and groundwater/nitrogen and phosphorus pollution/rainfall/fertilization分类
资源环境引用本文复制引用
张靖雨,蒋尚明,袁先江,韩磊..大沟蓄排工程对水体中氮磷浓度变化的影响[J].安徽农业大学学报,2018,45(6):1077-1084,8.基金项目
国家自然科学基金"基于试验与模拟的区域旱灾系统脆弱性识别与定量评估研究"(51409002)资助 （51409002）
