空心菜浮床对鱼塘水质和微生物多样性的影响

发布时间：2018-06-11 11:42

本文选题：空心菜浮床 + 环境微生物多样性　；参考：《中国环境科学》2016年10期

【摘要】：为从环境微生物的角度探讨生物浮床的水质调节机理,采用宏基因组学测序技术和生物信息学手段,分析了环境微生物和根系微生物群落的多样性.研究结果表明,鱼菜共生模式下优势菌门是变形菌门(Proteobacteria)、蓝细菌门(Cyanobacteria)、拟杆菌门(Bacteroidetes)、放线菌门(Actinobacteria)、绿弯菌门(Chloroflexi)和厚壁菌门(Firmicutes)等,主要菌属是聚球藻属(Synechococcus)、hgc I_clade、CL500-29_marine_group、芽孢杆菌属(Bacillus)和分支杆菌属(Mycobacterium)等;空心菜根系微生物群落中最丰富的优势菌门是变形菌门和蓝细菌门,主要菌属是红细菌属(Rhodobacter)、噬氢菌属(Hydrogenophaga)和聚球藻属等.研究结果还表明低覆盖率(3.5%)的空心菜生物浮床能够增加水体的溶解氧含量,降低水体中含氮化合物的浓度和改善养殖环境中的微生态平衡,提高有益菌和氮循环细菌的含量.
[Abstract]:In order to study the mechanism of water quality regulation in floating bed from the point of view of environmental microorganism, the diversity of environmental microorganism and root microbial community was analyzed by means of macrogenomics sequencing and bioinformatics. The results showed that the dominant bacteria were Proteobacteriae, Cyanobacteria, Bacteroidetesa, Actinobacteria, Chloroflexium and Firmicutesa in fish and vegetable symbiosis. The main genera are Synechococcus sp.hgc Icladec CL500-29marinegroup (Bacillus) and Mycobacterium), and the most abundant dominant bacteria in the root microbial community are Proteus and cyanobacteria. The main genera are Rhodobacterium, Hydrogenophagaophaga and Chlorella. The results also showed that the floating bed with low coverage (3.5%) could increase the dissolved oxygen content, decrease the concentration of nitrogen compounds in the water body, improve the microecological balance in the culture environment, and increase the contents of beneficial bacteria and nitrogen cycling bacteria.
【作者单位】：华中农业大学;
【基金】：国家科技支撑计划课题(2012BAD25B05) 湖北省自然科学基金(2013CFA095)资助
【分类号】：X17;X714

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