生态沟渠吸收氮磷效果研究（英文）

论文摘要

采用模拟沟渠试验,研究了9种水生植物吸收氮磷能力的差异,并选择氮磷吸收能力较好品种构建生态沟渠和氧化塘,研究其氮磷吸收效果。结果表明,种植水生植物后模拟沟渠水中氮磷残留量显著减少,美人蕉、狐尾藻、珍珠梅、海寿花和茭白的生物量高,氮磷的吸收量大,其中种植美人蕉和狐尾藻效果最佳。农田排水中氮磷通过生态沟渠水生植物吸收后浓度显著降低;主沟总氮、可溶性氮和总磷浓度平均降低39.6%、40.1%和36.9%;支沟总氮、可溶性氮和总磷浓度可再平均降低6.6%、10.3%和13.6%;氧化塘总氮和总磷浓度可再降低17.7%和13.3%。生态沟渠可有效拦截水体氮磷,具有净化水质的良好生态效益。

论文目录

• 1. Introduction
• 2. Materials and Methods
•   2.1. Experimental design
•     2.1.1. Screening test of aquatic plants
•     2.1.2. Experiment on interception of ecological ditch and absorption of oxidation pond
•   2.2. Sampling and measurement
•   2.3. Data processing
• 3. Results and Analysis
•   3.1. Selection of aquatic plant species with high efficiency of nitrogen and phosphorus absorption
•     3.1.1.Analysis of nitrogen and phosphorus residues in simulated ditch water
•     3.1.2. Analysis of biomass and uptake of nitrogen and phosphorus of aquatic plants
•     3.1.3. Analysis on varieties of aquatic plants with high efficiency of nitrogen and phosphorus absorption
•   3.2. Intercepting effect of ecological ditch on nitrogen and phosphorus in water
•     3.2.1. Change of total nitrogen concentration in ecological ditch in different periods
•     3.2.2. Changes of soluble nitrogen concentration in ecological ditch in different periods
•     3.2.3. Changes of total phosphorus concentration in ecological ditches in different periods
•     3.2.4. Effects of ecological ditch on nitrogen and phosphorus absorption
•   3.3. Effects of oxidation pond on nitrogen and phosphorus absorption
• 4. Conclusion

文章来源

类型: 期刊论文

作者: 杨勇,田昌,谢桂先,张玉平,宋海星,荣湘民

关键词: 水生植物,生态拦截,生态沟渠

来源: Agricultural Science & Technology 2019年05期

年度: 2019

分类: 农业科技,基础科学

专业: 生物学

单位: 湖南农业大学资源环境学院南方粮油作物协同创新中心土壤肥料资源高效利用国家工程实验室农田污染控制与农业资源利用湖南省重点实验室植物营养湖南省普通高等学校重点实验室

基金: Supported by Key Research&Development Plan of Hunan Province (2016JC2030),National Key Research&Development Plan (2018YFD0800500)~~

分类号: Q945

DOI: 10.16175/j.cnki.1009-4229.2019.05.006

页码: 32-39

总页数: 8

文件大小: 1056K

下载量: 27