摘要
以螺蛳为净化生物,研究了直接向养殖塘中放养螺蛳对鲫鱼养殖塘的底泥和水质的改善效果。结果表明,通过直接放养螺蛳使得养殖塘水质的污染状况有所缓解,然而改善前后水体的内梅罗综合污染指数仍同属于重污染等级。因此仅采用直接放养螺蛳的方法对养殖塘进行底泥修复还不能使养殖塘水质得以彻底净化,应与其他修复技术配合使用,从而达到更好的底泥修复和水质净化效果;总体来说,螺蛳的放养量越大,水质净化效果越好,但并不是无限制地增加螺蛳的放养量都对水质净化有利。
The snail（C.cathayensis） was applied as the purification biological and stocked into carp culture pond directly to investigate the restoration effect of snail on the sediment and water of ponds.After C.cathayensis stocking for a certain period of time,the water quality of pond was slightly improved,while it still belonging to the heavy pollution grade according to the Nemerow pollution index.Snail stocking could not thoroughly purify the water quality of pound,so it should be applied together with other restoration technologies so as to better improve the sediment and water quality of pond.Increasing the snail stocking quantity in a certain rang could better improve the water quality of pond,and the optimist stocking quantity need further study.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2011年第6期44-47,共4页
Environmental Pollution & Control
基金
江苏省水产三项工程项目(No.PJ2006-50)
现代农业产业技术体系建设专项资金资助项目(No.CARS-49)
中央级公益性科研院所基本科研业务费专项资金资助项目(No.2007JBFA03)
关键词
底泥修复
螺蛳
养殖塘
环境效应
sediment restoration
sanil
pond
environmental effect
