1.影响药效因素水体理化因子,如温度、盐度、酸碱度、氨氮和有机质含量,以及生物密度(生物量)等,都是影响药效的重要因素。一般认为,药效随盐度升高而降低,随温度升高而增强。通常温度每升高10℃,药效可提高1倍左右。酸性药物、阴离子表面活性剂及四环素类药物,在碱性环境中作 1. Factors affecting the physical and chemical factors Water physical and chemical factors, such as temperature, salinity, pH, ammonia nitrogen and organic matter, and biological density (biomass), are important factors that affect the efficacy. It is generally believed that the efficacy decreases with increasing salinity and increases with increasing temperature. The temperature is usually increased by 10 ℃, the efficacy can be increased about 1 times. Acidic drugs, anionic surfactants and tetracycline drugs, made in alkaline environment