地衣芽孢杆菌De在优质草鱼养殖中的应用研究

Applied research of Bacillus licheniformis De in grass carp (Ctenopharyngodon idellus) culture

摘要: 运用综合对比分析法探讨地衣芽孢杆菌De在优质草鱼（Ctenopharyngodon idellus）养殖中的应用效果，其评价指标分别为成活率、水体pH、透明度、溶解氧及水中氨氮、硝酸盐浓度等。结果表明，施用地衣芽孢杆菌De可在一定程度上使水体环境和养殖生产性能得到优化，提高养殖草鱼的成活率，显著降低水体透明度及水中氨氮、硝酸盐含量（P0.05），使水体pH、溶解氧有利于草鱼的生长。其中施菌组较对照组的成活率、水体pH、溶解氧分别提高了3.2%、3.9%、25.5%，而水体透明度、氨氮及亚硝氮浓度则分别降低了38.5%、74.6%、69.3%。

Abstract: Effects of Bacillus licheniformis De on grass carp (Ctenopharyngodon idellus) culture were analyzed with indexes including fish survival rate, pH, water transparency, dissolve oxygen, ammonia nitrogen and nitrite nitrogen. The results showed that the survival rate, pH and water dissolve oxygen of test groups increased 3.2%, 3.9%, 25.5%, respectively, but water transparency, ammonia nitrogen and nitrite nitrogen decreased 38.5%, 74.6%, 69.3%. In conclusion, the productive efficiency, assessment indexes and environmental quality in test groups all optimized in a certain extent.