TTPC对模拟池塘微生态系统影响的研究

Studies on Effects of TTPC on Micro-ecosystem

试验设定3个TTPC浓度梯度处理组和1个对照组,研究TTPC(处理96 h)对模拟池塘微生态系统理化因子、浮游生物及鲤鱼苗的影响。结果表明,模拟池塘微生态系统中水温、盐度、pH、DO、COD、NO2--N与TTPC浓度之间均呈现负相关关系,而透明度、NH3-N、TN、PO43--P和TP与TTPC浓度之间则呈现正相关关系。TTPC对模拟池塘微生态系统中浮游生物及鲤鱼苗均有一定的毒性,TTPC浓度为0.6 mg/L时能有效杀灭水华藻类且对鲤鱼苗是安全的,但水体中溶解氧含量较低且氨氮有所升高,因此在水产上使用TTPC杀藻的同时,需开增氧机以保证水体中溶解氧含量并添加适宜活菌剂等降低水体氨氮含量。

This paper studies the effects of TTPC with three different concentrations on micro-ecosystem in 96 h.The results shows that the relationship between concentration of TTPC and water temperature,salinity,pH,DO,COD,NO-2-N tends to negative,but the relationship between concentration of TTPC and transparency,NH3-N,TN,PO3-4-P,TP tends to positive.According to the results of acute toxic effects of killing plankton,of the changes of environmental factors and of safe experiments on carp fry at different concentration of TTPC,the recommended safe concentration of TTPC for aquaculture is 0.6 mg/L.Meanwhile,we also recommended that peasants open aerators and add feasible living bacterium agents when using TTPC in aquaculture.