李 月，刘 晃，吴 凡，丁永良
（农业部渔业装备与工程重点开放实验室，中国水产科学研究院渔业机械仪器研究所，上海，200092）

摘 要：在自然光照条件下，研究纳豆芽孢杆菌(Bacillus natto)在胭脂鱼养殖中的净水作用。设置4个相同的内循环鱼缸，其中3个加入纳豆芽孢杆菌作为试验组，另一个不加纳豆芽孢杆菌作为对照组。试验结果：整个试验期间对照组平均浊度为24 NTU+，水体持续为绿色浑浊状；3个试验组出现了9-13 d的<5 NTU+的低浊度、低浓度NH4+-N、低浓度NO2--N的清澈透明水质。对照组的藻相以栅藻为主，藻密度维持在106数量级，3个试验组的藻密度均比对照组的藻密度低1个数量级，经SPSS单因素方差分析试验组对应的浊度显著低于对照组的浊度。试验表明，纳豆芽孢杆菌能抑制养殖水体中藻类的生长繁殖，降低水体的浊度，提高水体透明度，有一定的净水效果。

关键词：纳豆芽孢杆菌；胭脂鱼；水产养殖；水质净化

Study on water treatment of Bacillus natto in Myxocyprinus asiaticus cultured
LI Yue，LIU Huang，WU Fan，DING Yong-liang
(Key Laboratory of Fishery Equipment and Engineering, Ministry of Agriculture;Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences,Shanghai 200092,China)

Abstract: To investigate water treatment of Bacillus natto in Myxocyprinus asiaticus cultured under natural lighting conditions, three same cycle fish tanks were added with Bacillus natto as experimental groups, the other one as a control group without Bacillus natto. The results showed as follow: control group has been always green turbid water, average turbidity of 24NTU+,but three experimental groups with 9-13 days of clear water quality, turbidity<5 NTU+, low concentration of NH4+-N and NO2--N. algal density of three experimental groups than that of the control group(106 orders of magnitude) lower one order of magnitude. Through calculate in SPSS one-way ANOVA, the turbidity of three experimental group was significantly lower than that of the control group. Tests showed that Bacillus natto inhibited growth and reproduction of algae in Myxocyprinus asiaticus cultured，reduced water turbidity, and increased water transparency, it therefore has water treatment effect.

Key words：bacillus natto;Myxocyprinus asiaticus ;aquaculture;water treatment

基金项目：科研院所技术开发研究专项项目“节能型高密度循环水养殖系统关键技术研究和示范”（2010EG134287）；农业部引进国际先进农业科学技术项目“海水生物过滤技术合作研究”（2010-S9）。
作者简介：李月（1984—），女，助理工程师，硕士，主要从事水产养殖工程和化学分析工作。E-mail：liyue@fmiri.ac.cn。
通讯作者：刘晃（1973—），男，副研究员，硕士，主要从事水产养殖工程研究。E-mail：liuhuang@fmiri.ac.cn。

（《渔业现代化》2011.38（4）：6-12）