到了炎热的夏季，气温和水温都维持在一个高水平上，鱼塘内各种微生物、寄生虫大量繁殖，而此期间，池塘水质也极易恶化，造成鱼体抵抗力下降，从而被病原体感染。因此，夏季是鱼病发生的又一次高峰。所以，夏季的防病治病工作是极为重要的。这个时期常发的细菌病有肠炎病、白 In the hot summer months, both the temperature and the water temperature are maintained at a high level. Various microorganisms and parasites in the fish pond multiply. In the meantime, the water quality of the pond is also easily deteriorated, causing the fish’s resistance to decline and thus being infected by the pathogen . Therefore, summer is another peak of fish disease. Therefore, the summer disease prevention and treatment work is extremely important. Bacterial disease often occurs during this period enteritis disease, white