湖垸农业区不同水体总磷浓度的差异分析  

Differences Analysis of the TP among the Different Water Body Types in the Agricultural Region Near Lake Embankment

作　　者：金卫斌[1] 艾天成[1] 苏荣瑞 胡梅[1] 王传金 

机构地区：[1]长江大学农学院,湖北荆州434025 [2]湖北省荆州农业气象试验站,湖北荆州434025 [3]湖北省三湖农场林业局,湖北江陵434100

出　　处：《湖北农业科学》2009年第11期2722-2724,共3页Hubei Agricultural Sciences

基　　金：湖北省自然科学基金创新群体项目(2006ABC013)

摘　　要：在湖北省三湖农场的灌溉和排水沟渠以及鱼池等水体中采集水样,测定了总磷浓度指标,对不同水体类型的总磷浓度差异进行了分析。结果表明,灌溉渠道水体总磷浓度最低,田间围沟水体中含量次之,垸内排水干渠中的浓度较高,尤其是在有集中居民区排放生活污水的渠道,磷浓度更高;垸内水体以鱼池及其围沟的水体磷浓度最高,达到国家地表水水质标准的Ⅴ类及劣Ⅴ类;垸外排水干渠在没有城市工业和生活污水排放的情况下,磷浓度较低,但承接有城市污水排放的四湖总干渠总磷浓度严重超标。说明农区水环境受城市污水排放的影响十分明显。改善湖垸农业区域的水环境,必须首先控制和治理城市向农村排放的污水,高度重视水产养殖活动对农区非点源污染的贡献。The water samples from the vary water body types, irrigation canals, drainages and fish pools etc, were collected and the concentrations of total phosphorus were tested to check the differences among the water types. The results showed that the TP from the irrigation canals were the lowest and it was a littler higher from the drainages around the farmland, it was more higher from the main channels inside embankment especially in the canals accepting polluted water from residential area. It was the highest in fish pool and ditches around, and the concentrations were belong to the type V or more accord- ing to GB3883-2002. The concentrations of the main drainages out of the embankments were lower where had not polluted water from city, but in the Sihu main drainage TP was very higher because there was much polluted water from city. That meant that effects of drainage water from city on countryside water environment were very significant. To improve the water environment of agricultural region, it was needed to control the polluted water from city and pay much attention to non- pointed pollution from fisheries

关 键 词：湖垸 水体 总磷 

分 类 号：X52[环境科学与工程—环境工程]