| 马凡凡，邢素林，徐云连，龚 娟，田 艳，马友华.巢湖圩区农田排水沟渠氮磷时空分布及输出特征[J].广东农业科学,2019,46(5):67-73 |
|
查看全文
HTML
巢湖圩区农田排水沟渠氮磷时空分布及输出特征 |
| Temporal and Spatial Distribution and Output Characteristics of Nitrogen and Phosphorus in Farmland Drainage Ditch in Polder Area around Chaohu Lake |
| |
| DOI：10.16768/j.issn.1004-874X.2019.05.010 |
| 中文关键词: 圩区 沟渠 种植方式 径流 氮磷 水体富营养化 |
| 英文关键词: polder area ditches planting methods runoff nitrogen and phosphorus water eutrophication |
| 基金项目:国家科技支撑计划项目（2012BAD15B03） |
|
| 摘要点击次数: 1626 |
| 全文下载次数: 546 |
| 中文摘要: |
| 【目的】以巢湖圩区农田排水沟渠为研究对象，探讨圩区农田沟渠排水中氮磷的输出特征及时空
分布规律。【方法】在 2015—2016 年间对巢湖圩区农田排水沟渠不同断面进行取样监测，测定沟渠水体氮、磷
含量。【结果】该区域沟渠水体氨态氮（NH4
+-N）与硝态氮（NO3
--N）平均浓度分别为 1.1、1.3 mg/L，均超过
Ⅲ类水质标准；总氮（TN）浓度为 1.6~11.6 mg/L，TP 浓度为 0.1~1.0 mg/L，平均浓度分别超过Ⅴ类和Ⅳ类水质标准。
农田沟渠水体氮磷浓度季节变化明显，总磷（TP）和 NH4
+-N 浓度夏秋季节较低，TN 和 NO3
--N 则表现为春、
夏浓度较高，秋、冬较低的变化特征。【结论】农田排水沟渠对氮磷具有拦截净化作用，沟渠水体氮磷浓度由
高到低为蔬菜 - 水稻区沟渠、稻麦 - 居民区沟渠和稻麦种植区沟渠，圩区排水氮磷浓度略低于农田沟渠排水，
但高于受纳河流鸡裕河河水。 |
| 英文摘要: |
| 【Objective】Taking the farmland drainage ditches in the polder area of Chaohu Lake as the research
object, the output characteristics and temporal and spatial distribution of nitrogen and phosphorus in the farmland drainage
ditches in the polder area was explored.【Method】From 2015 to 2016, different sections of farmland drainage ditches
in the polder area of Chaohu Lake were sampled and monitored, and the nitrogen and phosphorus contents of water in the
ditches were determined. 【Result】 The results showed that the average concentrations of NH4
+-N and NO3
--N of water in
the drainage ditches were 1.1 mg/L and 1.3 mg/L, respectively, which were above the class III water quality standard. The
TN concentration was 1.6-11.6 mg/L, the TP concentration was 0.1-1.0 mg/L, and the average concentrations of TN and TP
exceeded the class Ⅴ and Ⅳ water quality standards, respectively. The nitrogen and phosphorus concentrations in farmland
ditches water change with season obviously. The concentrations of TP and NH4
+-N were lower in summer and autumn, and
the concentrations of TN and NO3
--N were higher in spring and summer and lower in autumn and winter.【Conclusion】The
farmland drainage ditch has the function of intercepting and purifying nitrogen and phosphorus. The nitrogen and phosphorus
concentrations in the ditches of vegetable-rice area were highest, followed by those in ditches of rice-wheat-residential
area and ditches of rice-wheat cultivation area. The concentrations of nitrogen and phosphorus in the drainage ditches of the
polder area were slightly lower than those of the farmland ditches, but higher than those of the Jiyu River. |
|
查看/发表评论 下载PDF阅读器 |
