为探索农药对水产养殖池塘中光合细菌的影响,通过测定养殖池塘中分离纯化的光合细菌在辛硫磷、氯氰菊酯、乙磷铝、甲霜灵、百菌清、多菌灵、敌克松和百草枯等农药影响下的细菌生长数量,分析农药对光合细菌的影响。结果显示:辛硫磷和灭多威均能促进光合细菌的生长,细菌数量与药物浓度成正比,与对照组比较,灭多威低、中和高浓度均显著升高活菌数(P<0.05),辛硫磷只有高浓度显著升高(P<0.05);低浓度乙磷铝、中浓度氯氰菊酯农药光合细菌菌数均高于对照组(P<0.05),但高浓度乙磷铝、氯氰菊酯光合细菌菌数远低于对照组(P<0.05);多菌灵、敌克松对光合细菌影响不大,与对照组比较没有差异(P>0.05);甲霜灵、百菌清、阿维毒和百草枯明显抑制光合细菌生长或杀灭光合细菌(P<0.05)。 In order to explore the effect of pesticides on photosynthetic bacteria in aquaculture ponds, the photosynthetic bacteria in aquaculture ponds were determined by measuring the contents of phoxim, cypermethrin, cefotaxime, metalaxyl, chlorothalonil, carbendazim, Paraquat and other pesticides under the influence of the number of bacterial growth, analysis of pesticides on photosynthetic bacteria. The results showed that both phoxim and methomyl promoted the growth of photosynthetic bacteria, and the number of bacteria was proportional to the drug concentration. Compared with the control group, the concentrations of methomyl and mesotrione were significantly increased (P < (P <0.05). The numbers of photosynthetic bacteria in low concentrations of ethyl aluminum phosphate and medium concentration cypermethrin pesticides were all higher than those in the control group (P <0.05) The number of photosynthetic bacteria in cypermethrin was much lower than that in the control group (P <0.05). Carbendazim and dionsenol had little effect on photosynthetic bacteria, but there was no difference compared with the control group (P> 0.05). Metalaxyl, chlorothalonil, Avian and paraquat significantly inhibited photosynthetic bacteria growth or killed photosynthetic bacteria (P <0.05).