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春季,气温仍然较低,当水温在5℃~14℃时,大多数鱼体神经激素分泌少,消化酶活性低,鱼类不喜欢活动与摄食,且饲料生物也缺乏;同时水温急剧升降,不仅会对鱼类生长发育造成较大的影响,更会导致鱼类病害和死亡。因此春季水产养殖关键在于对鱼病的防治,主要是预防以下几方面病害发生。一是塘鱼厌食及其防治方法。当水温低于15℃时,大多数鱼摄食下降,生长放慢;当水温降至15℃时,对鲢、鳙、草鱼等鱼不投精饲料,只投青料;水温10℃时,少投或不投青料,但仍可施放适量粪便,但施放数量不宜多,以防水质变劣。
Spring, the temperature is still low, when the water temperature at 5 ℃ ~ 14 ℃, most of the fish less neurohormones, digestive enzyme activity is low, fish do not like activity and feeding, and feed organisms are also lacking; at the same time the temperature rose sharply, Not only will the fish growth and development have a greater impact, but also lead to fish disease and death. Therefore, the key to spring aquaculture lies in the prevention and treatment of fish diseases, mainly to prevent the occurrence of the following diseases. First, pond anorexia and its prevention and treatment methods. When the water temperature is lower than 15 ℃, most of the fish drop in food intake and grow slowly; when the water temperature drops to 15 ℃, the fish such as silver carp, bighead carp and grass carp do not throw concentrate feed; Cast or not vote green material, but still can cast the right amount of manure, but the amount should not be cast more to prevent deterioration of water quality.