In summer, as the water temperature gradually rises, it is the peak period for the growth of fish. Therefore, good management and scientific feeding are the keys to improving production after summer.

When the water temperature is 20-28℃ in summer, the fish grows the fastest, and the feeding should be strengthened. Generally, feed concentrate 2 times a day and green feed 1 or 2 times a day. The feeding amount of the concentrated feed should be consumed within half an hour after the feeding, and the green feed should be consumed on the same day. The weather is sunny, the dissolved oxygen in the water is high, the fish intake is large, and the fish is fed more appropriately; the weather is hot, the dissolved oxygen in the water is low, the fish intake is small, and the residual feed is easily spoiled, so it should be fed less or not; the water quality is clean, and the fish is fed vigorously , more investment; poor water quality, less or no investment.

Rational fertilization is mainly used for ponds that feed water-based fish, and fertilization is appropriate in summer. From May to June, organic fertilizers are mainly applied, generally once every 7 to 10 days, and from July to September, apply less or stop the application of organic fertilizers, and use chemical fertilizers instead, and once every 4 to 6 days. The amount of fertilization is determined according to the pond water fertility, water quality and weather conditions. Generally, the transparency of the pool water is kept at about 25cm, and the water color is dark brown, greenish brown, yellowish green or oily blue.

Regulation of water quality In summer, the water temperature is high, and the water quality changes rapidly. At the same time, due to the large amount of feeding and the large amount of fish excrement, it is easy to pollute the water quality, so water quality regulation should be strengthened. Generally, water is added or changed once every 7 to 10 days, and the water is changed 10 to 15 cm each time, and the water depth is maintained at 1.5 to 2 m. Intensive ponds should be installed with aerators in summer. Generally, the aerators should be turned on at 2-3 pm on sunny days, and they should also be turned on when there is a danger of floating heads. In addition, the water quality can also be adjusted by regularly stirring the sediment and removing pollution sources.

Prevention and control of fish diseases Summer is the season when fish diseases are frequent, and we must focus on disease prevention work. Food and food tables are cleaned every 10 days. After it is dissolved, sprinkle it, and sprinkle it once every two weeks with bleaching powder 1 mg/l or quicklime 20 mg/l.