At present, it is at a high temperature. Due to the rapid growth of Penaeus vannamei, the density of shrimp cultured in the pond increases, which can easily lead to deterioration of water quality, and the shrimps die of hypoxia. In order to ensure the healthy growth of white shrimp in South America, farmers are reminded to pay particular attention to the following points: 1. Pay attention to changes in water quality and increase oxygen and water in time. In high temperature weather, shrimps have large food intake, many excretions, and are easily deteriorated, resulting in lack of oxygen. Therefore, the opening time of aerators should be appropriately extended every day. In case of thunderstorms and hot weather, turn on oxygen throughout the day. If the effect of oxygen increase is not good, oxygenation equipment should be added in the tank to ensure that there is enough dissolved oxygen in the tank. At the same time, it is necessary to constantly change the new water, and change the water 8-10 centimeters per day, changing the water of the pool by 1/3 every 7-8 days. 2, take appropriate cooling measures. In hot weather, the surface water temperature of the pond is as high as 33°C, which affects the normal growth of shrimp. At this point, the pond level should be deepened to 1.8-2.0 meters. If there are conditions, underground deep well water can be injected into the pool water, which can play a certain cooling effect. 3. Adopt chemical and biological technologies to improve water quality and sediment quality. In the hot season, dolomite powder or quicklime should be applied every 10-15 days. Water inconvenient ponds can be clarified with biological agents such as clear water or photosynthetic bacteria. 4, strengthen duty management. Adhere to the morning, mid-night and evening patrols. Observe the shrimp's feeding conditions, activities, and changes in water color. Find problems and deal with them in time. If shrimps are found to be anoxic floating heads, oxygenated powders and aerators should be dispelled in time and new water should be added to prevent accidents. 5. Harvest fish in batches to maintain a reasonable shrimp density in the pond. During the hot season, Penaeus vannamei grows fast, consumes large amounts of oxygen and is easy to flood the pond. The technical measures for arresting and catching large fish and catching small fish should be adopted in a timely manner, and shrimps that meet the specifications of commodities should be caught and listed in a timely manner so as to maintain a reasonable culture density and promote the healthy growth of shrimp.
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