大水面养殖一般指在水库、湖泊、溪河及大型塘堰内养鱼,它具有面积大、水位深、水容量大的特点,同时兼有蓄洪和灌溉的功能。大水面防治鱼病常用遍洒给药法施药,用量大、成本高,且药物流失快,鱼病难以控制和治疗。 Aquatic cultivation generally refers to fish farming in reservoirs, lakes, brooks and large ponds. It has the characteristics of large area, deep water level and large water capacity, and has both flood storage and irrigation functions. The large surface of the common disease prevention and treatment of fish disease drug delivery, large dosage, high cost, and fast drug loss, fish disease is difficult to control and treatment.