Aquaculture can provide people with fresh aquatic products in different seasons. Summer is the golden season for aquaculture. However, due to the strong sunshine, high temperature, heavy rain, prosperous new and old generation of fish and shrimp, and the increase of organic matter in the water body, the water quality has changed significantly. Aquaculture is prone to outbreaks of disease, causing significant losses, affecting the annual output and benefits. Therefore, summer is also the most difficult season for aquaculture management. The following aspects should be paid attention to in summer aquaculture management:

1、 Water quality control -- good water quality is the key

In summer, the water temperature is high, the water quality changes rapidly, in addition, the feeding amount is large, and the fish excretion is large, which easily leads to the hypoxia of the aquaculture water body and the increase of the content of harmful substances such as nitrite and ammonia nitrogen. Therefore, water quality regulation should be strengthened: 1. Add new water regularly to supplement the consumption caused by evaporation and the water in the dilution tank, and maintain a certain water level to facilitate the growth of fish. 2. Open more oxygen increasers to promote convection from top to bottom of the water body and avoid anoxic zone at the bottom. At the same time, follow the principle of "three open and two not open": 1. Start up at noon in sunny days; 2. Start up in the morning on cloudy days; 3. The machine starts in the middle of the night in rainy days; 4. No power on in sunny evening; 5. No power on in cloudy days and daytime. The Roots blower is equipped with an aeration tube and aeration disks to achieve microporous aeration mode and effectively achieve the purpose of oxygen enrichment.

2、 Key disease prevention

High temperature is the best growing season for fish, and also the period when they are most susceptible to diseases. Once the disease occurs, the infection is very fast, and comprehensive disease prevention should be done well. Prevention and control measures: under the condition of high density and high temperature in summer, more oxygen generators should be opened to accelerate the convection between water and water; Use bleaching powder once every half month, and sprinkle the whole pond to make the pond water become 1.2PPM or bromochlorohydrin, quaternary ammonium salt, etc., which can effectively prevent bacterial fish disease; Enrofloxacin+Baoganhudanning+vitamin CE can be fed regularly to resist bacteria, diminish inflammation, protect liver and bile, and improve immunity of fish and shrimp; Microbial agents can also be used regularly. If fish diseases are found, professional technicians should be asked to diagnose them correctly in time to prevent the spread. It mainly prevents bacterial hemorrhagic disease and enteritis.

3、 Pay attention to adjusting the breeding density

The aquaculture density depends on the pond conditions and supporting facilities. The water quality of the pond is stable when the organic matter pollution and self purification capacity are balanced. When the breeding density increases, the fish excreta increases, and the organic matter pollution exceeds the self purification capacity of the pond, the water quality is unstable and very easy to deteriorate, and fish diseases increase. In the summer of continuous high temperature, the stratification of aquaculture water is particularly serious. The bottom of the pond is always in a state of hypoxia, which is very easy to increase the concentration of harmful substances such as nitrite and ammonia nitrogen, and is prone to outbreaks of various fish diseases and high mortality. Therefore, the breeding density should be adjusted appropriately according to the season to ensure the self purification capacity of the pond.

4、 Control the growth of harmful algae

In the high temperature season, aquatic products grow fast, feed a large amount, excreta are large, and the sediment is eutrophic, leading to the rapid propagation of harmful algae, whose density exceeds that of beneficial algae, and easy to form dangerous water colors such as black water, soy sauce water, dark red water, blue green water, etc. At the same time, in the continuous rainy weather in summer, the pond is prone to fall algae and produce algal toxins. Therefore, it is very important to select professional aquaculture paint for industrial aquaculture. Straits aquaculture paint is a national patent seawater immersion resistant aquaculture paint, which has super sealing capacity, will not leave a trace of adhesion and living space for bacteria and algae, effectively inhibit the growth of harmful algae, and improve the survival rate and quality of fish and shrimp and other aquatic products.

5、 Scientific and reasonable feeding

Summer is the growth peak period. In sunny days, the dissolved oxygen in water is high and the food intake is large, so the feeding amount can be appropriately increased; When the weather is muggy, the dissolved oxygen in the water is low, and the residual bait is easy to deteriorate, so the feeding amount should be adjusted appropriately. The amount of feed should not be too much, and the principle of 80% satiety should be adhered to to avoid indigestion and intestinal diseases caused by over satiety. 2. When the water quality is fresh, the food intake is vigorous, and more can be taken; If the water quality is poor, it shall be used less or not. 3. From the feeding situation, the feeding times can be appropriately reduced in hot weather. At the same time, the biological alginate from Yuanda Ocean can be added in the mixing process, which can effectively prevent the mixed drug from flowing into the water, improve the utilization rate of the mixed drug, and prevent water pollution.

6、 Keep abreast of weather changes and pay attention to flood prevention

Aquaculture farmers should pay more attention to the weather forecast and do a good job of prevention and anti stress before and after rain. Summer is the season of frequent storms and typhoons, and pond fish and shrimp are easy to escape. Therefore, aquaculture farmers should also strengthen pond patrol, escape prevention, fence reinforcement and other work in their basic daily production management.

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