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EM复合菌剂与水蕹菜对草鱼养殖池的净化效果研究

2015-12-11康银王晓清

关键词:水质

康银+王晓清

基金项目:湖南省农业科技支撑重点资助项目(2011NK2010)

*通讯作者,Email:wangxiao8258@126.com,肖光明3,杨虎城1,曾丹1(1.湖南农业大学动物科学技术学院,中国 长沙410128;2.湖南省水产高效健康生产协同创新中心,中国 常德415000;

3.湖南省畜牧水产局,中国 长沙410000)

摘要为改善草鱼养殖池塘水质,研究了EM复合菌剂与水蕹菜对草鱼养殖池的净化效果.结果表明:净化处理30 d后,水蕹菜处理组对草鱼养殖池的净化处理效果最好,且与EM菌剂联合使用有增强的效果,对氨氮、亚硝酸盐、总磷的去除率分别为86.21%,50%,77.78%,且氨氮和总磷的去除率显著高于EM菌剂处理组和对照组;EM菌处理组的氨氮、亚硝酸盐、总磷的去除率分别为36.08%,50%和54.29%,显著高于对照组.且两处理组均能提升草鱼养殖水体的溶氧量,并且能稳定pH值.

关键词养殖池;水质;净化

中图分类号X522文献标识码A文章编号10002537(2015)06002106

Purification of Water from Ctenopharyngodon Idellus Culture

Pound by Ecological Microorganisms and Ipomoea Aquatic

KANG Yin1,2, WANG Xiaoqing1,2*, XIAO Guangming3, YANG Hucheng1, ZENG Dan1

( 1. College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China;

2. Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde 415000, China;

3. Animal Husbandry and Fishery Bureau of Hunan Province, Changsha 410000, China)

AbstractIn order to improve the water quality, the water from Ctenopharyngodon idellus culture pond was treated with Ecological Microorganisms (EM), Ipomoea aquatica, alone or in combination. The effects of water purification were investigated. Results showed that the treatment performance is the best among the different methods, when the water was purified by Ipomoea aquatic, and the performance can be enhanced when Ipomoea aquatic was combined with EM. The removal rates of ammonia nitrogen (AN), nitrite (NIT) and total phosphorus (TP) in water are 8621%, 50% and  77.78%, respectively, after 15 days treating of Ipomoea aquatic. The removal rates of TN and TP treated by Ipomoea aquatica are much higher than those of EM. The removal rates of AN, NIT, TP treated by EM are much higher than the blank group. Meanwhile, the two methods can increase the content of dissolved oxygen and stabilize the pH value.

Key wordspond; water quality; purification

草鱼 (Ctenopharyngodon idellus) 在我国渔业经济中有着举足轻重的地位.由于我国目前池塘养殖生产高度集约化,高密度养殖使底泥和水体中的营养盐和有机物浓度升高,水体透明度下降,从而引起一系列的问题,严重影响养殖动物的生存与生长[1].目前,国内外用于养殖水净化处理的方法大致可分为物理、化学和生物三类.其中,生物方法是指通过选择和培育有益和高效的生物种类——微生物或自养性植物,来吸收水中的营养物质,防治残饵和多余肥料及养殖动物排泄物积累所引起的水质败坏,从而使得精养池塘生态系统沿着改善水质、提高鱼产力等良……

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