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Suggestions on Operation of Aquaculture in "White Dew" Solar Energy

Release time:

2021-09-06

Suggestions on Operation of Aquaculture in "White Dew" Solar Energy

September 7 this year is the "White Dew" in the 24 solar terms ". During this period, the temperature difference between day and night is large, the water convection is strong, and the water environment is easy to produce drastic changes. At this time, the water temperature is also suitable for the reproduction of harmful bacteria. Dramatic changes in water temperature and physical and chemical indicators of water will reduce the resistance and immunity of fish, while a large number of harmful bacteria will take advantage of the deficiency, causing outbreaks of aquatic diseases.

1.Characteristics of aquaculture ponds

1. The large temperature difference between the upper and lower water layers of the pond is easy to cause water stratification and hypoxia at night.

2. The pond is in the middle and late stage of breeding, and the water quality and bottom material are seriously polluted, which is easy to breed a large number of harmful bacteria and parasites; and the load of the pond is increased, which is prone to hypoxia.

3, water eutrophication is serious, algae single, prone to "inverted algae", causing water change.

4, dead algae, residual bait feces and other accumulation, ammonia nitrogen, nitrite and other toxic and harmful substances increased.

2.Characteristics of fish health status

1, the water temperature dropped to 30 degrees Celsius, into the peak of the incidence of grass carp hemorrhage.

2. The amount of feed is large, the intake of fish is relatively high, and the burden on the liver and digestive system is increased.

3, the water dissolved oxygen saturation is low, the fish is in hypoxia or sub hypoxia state for a long time, the fish constitution is poor, easy to be pathogenic infection.

4. In the early stage of breeding, due to the use of excessive antibacterial drugs and antibiotics, the fish body has drug resistance, which makes the treatment effect not ideal in the later stage of the disease.

3.Advice on Management Operation of Pond before and after Bailu

1. For ponds with heavy load, appropriate fish can be selected to reduce breeding density and pond load.

2. For ponds with poor water quality, open more aerators at noon on sunny days and early in the evening. If conditions permit, fresh water can be replaced many times in a small amount to increase dissolved oxygen in the water body.

3, whether it is insecticidal or disinfection, try to avoid the use of irritating drugs, you can regularly use national standard productsSophora AitInsecticidal orSanhuang PowderSterilization, are pure Chinese medicine extraction, safe non-toxic no stimulation, not hurt the fish does not hurt the water.

4. Regular useStrong decomposition bottom modificationorSuper bottom modificationThe modified base can effectively reduce the reproduction of parasites and harmful bacteria, achieve the purpose of insect suppression and bacteriostasis, and reduce the incidence of fish.

5. Regular useEM Golden Deworlactic acid bacteria speciesExpanded after use, cost-effective. Regulation of water quality, decomposition of residual bait feces and other organic matter; regular useBaidu Quick SolutionDetoxification, especially when the weather is unstable or changes greatly, detoxify living water, eliminate toxins, and relieve anorexia.

6. Reduce the feeding amount when the weather is bad, especially the feeding time at night can be appropriately advanced, and the number of feeding meals can be increased when necessary; useliver and gallbladder double healthLiver protection, prevent enteritis, prevent and treat the occurrence of hepatobiliary syndrome.