EM复合菌剂与水蕹菜对草鱼养殖池的净化效果研究

Purification of Water from Ctenopharyngodon Idellus Culture Pound by Ecological Microorganisms and Ipomoea Aquatic

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p H值.

In 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 86. 21%,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.