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步入3月,随着气温、水温逐渐回升,池塘中各种微生物日益活跃,对鱼类有致病性的细菌、寄生虫等病原体也开始孳生和繁殖,适宜的条件下会感染鱼体;同时,经过严寒冬天的自然越冬鱼类,由于摄食偏少,体内积存的营养消耗较大,鱼体消瘦,体质变差,对疾病的抵制能力较弱,易感染各种病原体。因此,需要做好鱼类寄生虫及细菌病、鳖越冬后死亡症、罗氏沼虾白浊病、对虾的白斑病、红体病等病害的预防。同时随着水温的上升,感染了水霉病的养殖品种,容易继发感染细菌病,要做好消毒及防治措施。
Into March, with the temperature, the water temperature gradually picked up, the pond is increasingly active in various microorganisms, pathogenic bacteria on fish, parasites and other pathogens also began breeding and breeding, under appropriate conditions will infect fish; At the same time, natural wintering fishes after severe cold winter have less resistance to the disease due to less food intake and more nutrient consumption accumulated in the body. The fish body becomes thinner and their body becomes weaker, which makes them susceptible to various pathogens. Therefore, the need to do a good job of fish parasites and bacterial disease, death of turtle overwintering, white swamp prawn disease, white spot disease shrimp, red body disease prevention. At the same time as the water temperature rises, infected with moldy aquaculture species, easy to secondary bacterial infection, to be good disinfection and control measures.