| 氮素在盐碱稻田内的动态变化及潜在环境影响分析 |
| |
| 引用本文： | 叶洁琼,袁瑞霞,王兆慧,柳建设.氮素在盐碱稻田内的动态变化及潜在环境影响分析[J].安徽农业科学,2011(17):10374-10376,10425. |
| |
| 作者姓名： | 叶洁琼 袁瑞霞 王兆慧 柳建设 |
| |
| 作者单位： | 东华大学环境科学与工程学院; |
| |
| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07207-006-04); 上海市重点学科建设项目(B604) |
| |
| 摘 要： | 目的]分析氮素在盐碱稻田内的动态变化及潜在环境影响。方法]以松嫩平原典型苏打盐碱地水稻田为研究对象，采用田间试验方法研究了该区水稻田中的氮素动态变化及其对环境的潜在影响。结果]试验区土壤属强碱土，CEC、C／N比值都较高，保肥能力差；2年试验期内，田袁水中的盐碱化指标含量波动较大；试验初期总氮和氨氮浓度达到最高值，之后随时间的推移而下降，强降雨对其影响较大；硝态氮浓度出现峰值晚于总氮和氨态氮，之后随时间的推移而下降；试验期间，氨挥发损失占总氮损失的18．9％～28．8％；田面水中总氮浓度均高于国家地表水环境质量Ⅲ类标准；农田退水中的非离子氨浓度较高，对下游查干湖鱼类养殖存在危害。结论]为盐碱地治理以及水体和渔业资源保护提供了理论依据。
|
| 关 键 词： | 盐碱地 氮素 动态变化 潜在环境影响 |
Dynamic Changes of Nitrogen in Saline-alkaline Paddy Field and Their Potential Environmental Impacts |
| |
| YE Jie-qiong et al.Dynamic Changes of Nitrogen in Saline-alkaline Paddy Field and Their Potential Environmental Impacts[J].Journal of Anhui Agricultural Sciences,2011(17):10374-10376,10425. |
| |
| Authors: | YE Jie-qiong |
| |
| Institution: | YE Jie-qiong et al (College of Environmental Science and Engineering,Donghua University,Shanghai 201620) |
| |
| Abstract: | Objective] The paper was to study the dynamic changes of nitrogen in saline-alkaline paddy field and its potential environment impacts.Method] With typical sodic saline-alkaline paddy fields of Songnen Plain as study object,field test method was used to explore the dynamic changes of nitrogen in paddy field of the region and its potential impact on environment.Result] The soil in test region was strong alkaline with high CEC and C/N ratios,as well as poor preserving capacity of fertilizer.During the two-... |
| |
| Keywords: | Saline-alkaline soil Nitrogen Dynamic changes Potential environmental impact |
| 本文献已被 CNKI 维普 等数据库收录！ |
