摘要
对耐盐红螺菌科光合细菌应用于淡水斑点叉尾、彭泽鲫养殖后 ,水化学环境因子、细菌类群及养殖生物的变化进行了研究。结果表明 ,鱼池泼施光合细菌后 ,水体NH4 + -N、NO2 --N、NO-3 -N和COD下降 ,溶氧和pH上升 ;细菌类群及数量变化大致是 :光合细菌提高 3～ 5 0倍 (多数在 15～ 2 0倍 ) ,亚硝酸细菌提高 3倍 ,硝酸细菌提高 4～ 5倍 ;斑点叉尾养殖池的主要异养细菌肠杆菌科细菌提高 9.4% ,气单胞菌属降低7.5 % ,彭泽鲫养殖池的主要异养细菌假单胞菌属降低 16 % ,肠杆菌科提高 2 1% ;养殖生物的养殖效果是 :斑点叉尾鱼苗个体增重提高 15 .7% ,彭泽鲫苗个体增重提高 12 .8%。
The variation of chemical environmental factors in the water ecosystem, bacterial population and cultured organisms in the freshwater fishponds was studied after applying salt-resistant Rhodospirillaceae bacteria to culture Ictalurus punctatus and Pengze crucian . The results showed that the NH_4 +-N,NO_2 --N,NO_3 --N and COD content decreased and dissolved oxygen and pH increased in the water ecosystem after sprinkling Rho. capsulata in the fishponds. The change of bacterial population and quantity was as follow: The amount of photosynthetic bacteria, nitrous bacteria and nitric bacteria rose 3-50 (majority 15-20 times), 3 and 4-5 times respectively. The amount of major heterotrophic bacteriaEnterobacteriaceae rose 9.4% and Aeromonas reduced 7.5% in the Ictalurus punctatus fishponds;Pseudomonas reduced 16% and Enterobacteriaceae rose 21% in the Pengze crucian fishponds. The cultured effect of the cultured organism was that the average increasing rate of weight of every Icthlurus punctatus fry and Pengze crucian fry rose 15.7% and 12.8% respectively.
出处
《水产学报》
CAS
CSCD
北大核心
2002年第3期231-236,共6页
Journal of Fisheries of China
基金
福建省教育厅项目 (JB0 0 0 74)
福建省科技厅高新技术项目 ( 2 0 0H0 2 1)
关键词
耐盐红螺菌科细菌
淡水鱼池
水质
细菌类群
影响
salt-resistant Rhodospirillaceae bacteria
freshwater culture
water quality
influence
