CAJ | 학술논문

以光合细菌（ Photosynthetic bacteria ， P）和枯草芽孢杆菌（ Bacillus subtilis， B）为实验菌种，研究两者最佳浓度配比的复合菌组对淡水养殖水质的净化作用。试验设置1个对照组（ CK ）和5个复合菌组（ PB1、 PB2、 PB3、PB4、 PB5），5个复合菌组浓度配比分别为（2．0×105＋1．5×105） CFU／mL、（2．0×105＋3．0×105） CFU／mL、（2．0×105＋4．5×105） CFU／mL、（4．0×105＋1．5×105） CFU／mL、（6．0×105＋1．5×105） CFU／mL，分析各试验组的化学需氧量（ COD）、氨氮（ NH3－N）、溶解氧（ DO）、 pH等水质指标。结果显示：复合菌能够明显去除水体CODMn ， PB2组去除率最高达，44．98％；能有效增加DO， PB2组增氧率最高，为27．9％；能明显去除氨氮， PB2组去除率最高达78％；并且能稳定pH值在8．6左右，5个复合菌组差异不显著（ P＞0．01）。复合菌发挥最佳净化能力的时间约在6～8 d。结果表明，复合菌最佳浓度配比为（2．0×105＋3．0×105） CFU／mL，该浓度组较对照组和其他试验组能够显著净化淡水养殖水质，有效改善养殖环境。
이광합세균（ Photosynthetic bacteria ， P）화고초아포간균（ Bacillus subtilis， B）위실험균충，연구량자최가농도배비적복합균조대담수양식수질적정화작용。시험설치1개대조조（ CK ）화5개복합균조（ PB1、 PB2、 PB3、PB4、 PB5），5개복합균조농도배비분별위（2．0×105＋1．5×105） CFU／mL、（2．0×105＋3．0×105） CFU／mL、（2．0×105＋4．5×105） CFU／mL、（4．0×105＋1．5×105） CFU／mL、（6．0×105＋1．5×105） CFU／mL，분석각시험조적화학수양량（ COD）、안담（ NH3－N）、용해양（ DO）、 pH등수질지표。결과현시：복합균능구명현거제수체CODMn ， PB2조거제솔최고체，44．98％；능유효증가DO， PB2조증양솔최고，위27．9％；능명현거제안담， PB2조거제솔최고체78％；병차능은정pH치재8．6좌우，5개복합균조차이불현저（ P＞0．01）。복합균발휘최가정화능력적시간약재6～8 d。결과표명，복합균최가농도배비위（2．0×105＋3．0×105） CFU／mL，해농도조교대조조화기타시험조능구현저정화담수양식수질，유효개선양식배경。
Purification effects on freshwater aquaculture water qualities were studied by optimizing concentration ratio for a mixture of Photosynthetic bacteria and Bacillus subtilis.For studying and analyzing the water quality index of chemical oxy-gen consumption(COD), ammonia nitrogen(NH3-N), dissolved oxygen(DO) and pH, 1 control group(CK) and 5 composite bacterium groups ( PB1、 PB2、 PB3、 PB4、 PB5 ) were set up in the experiment .The concentration ratio of 5 composite bacterium groups were (2.0 ×105 +1.5 ×105 ) CFU/mL, (2.0 ×105 +3.0 ×105 ) CFU/mL, (2.0 ×105 +4.5 ×105) CFU/mL, (4.0 ×105 +1.5 ×105) CFU/mL and(6.0 ×105 +1.5 ×105) CFU/mL, respectively.The results showed that composite bacterium groups could reduce COD Mn obviously, the reonovald rate of PB2 group could reach 44.98%; the composite bacterium groups could effectively remove NH 3-N, the removed rate of PB 2 group could reach 78%; increase DO , the increasing rate of PB 2 group reach 27.9%; the composite bacterium groups could stabilize pH value around 8.6 , and no significant difference occurred among 5 groups ( P>0.01 ) .The time of 5 composite bacterium groups to play optimum purification ability was in 6~8 d.The results reflected the PB 2 group could obviously purify fresh-water aquaculture water quality and effectively improve environment than control group and the other composite bacterium groups when the optimum concentration ratio of Photosynthetic bacteria and Bacillus subtilis was 2.0 ×10 5 CFU/mL+3.0 × 105 CFU/mL.