作　　者： ; ; ; ;

机构地区： 华东师范大学资源与环境科学学院上海市城市化生态过程与生态恢复重点实验室

出　　处： 《农业环境科学学报》 2013年第6期1253-1260,共8页

摘　　要： 以上海市松江五厍生态农业园区水产养殖排水为研究对象,在调查试验区域内水产养殖情况及排换水情况的基础上,结合农业园区自身特点,开展水生植物组合净化示范工程建设。在示范工程运行一段时间后对其运行效果进行评估,结果表明,试验区域水产养殖排水水质得到了一定的改善,其对CODCr、TN及TP的去除率分别可达73.5%、24.9%及67.4%。通过比较组合技术与单项技术对水质净化效果的影响可知,水生植物组合净化技术对养殖水体的净化效果要优于单项技术的水质净化效果,组合技术比水生经济作物浮床单项技术对TN、TP、亚硝态氮和CODCr去除率平均分别提高了13.7%、40.1%、78.7%及114.4%。此外,对水生经济作物浮床上的空心菜定期收割,共收获11907kg,可获得一定的经济收益。将空心菜移植于螃蟹塘,不仅可供螃蟹食用,还可净化螃蟹塘的水质,有利于维持养殖系统的生物多样性,符合循环生态农业的生产模式。 The current ecological situation of aquaculture water quality in Wushe（Songjiang District, Shanghai City） district is not upto mark. In the present study, characteristics and basic information of ecological agricultural park were first investigated. Ecological remediation integration technology, including aquatic plant purification and aquatic economic crops floating bed were used to improve the aquaculture water quality in this district. After operating for a period of defined time, effect of the integration technology on quality improvement of aquaculture water was estimated. The results showed significant improvement in the aquaculture water quality at experimental site with removal rates of CODCr, TN and TP were 73.5%, 24.9% and 67.4%, respectively. In addition, the purification effects of ecological remediation integration technology and individual technology were compared. The results indicated that the integration technology was better than individual technology, as removed TN, TP, Nitrite nitrogen and CODCr at the rate of 13.7%, 40.1%, 78.7% and 114.4%, respectively, higher than that of individual technology. In addition, water spinach which was grown on aquatic economic crops floating bed was harvested at regular time intervals. The total harvest weight of water spinach was 11 907 kg, which could achieve good economic benefits. A small parts of the water spinach were transplanted to crab ponds. The transplanted water spinach could not only serve as food source for crab, but also purify the water quality in crab ponds, which could maintain the biological diversity in aquacultural ponds and coincidence with production mode of circulation ecological agriculture.

关 键 词： 水产养殖排水 水质改善 生态农业园区 水生经济作物浮床

领　　域： [环境科学与工程]