In the summer, the water temperature will also increase, and high temperatures will cause the bacteria in the water to multiply. Therefore, summer aquaculture should be done well for aquaculture. In this regard, Liu Chao, a researcher at the Animal Science College of Northwest Agriculture and Forestry University, put forward the proposal of "Summer fish farming".
When the ground water temperature is between 20°C and 28°C, especially between 25°C and 28°C, the growth of the fish is most prosperous, and the feed efficiency is the highest. It is important to grasp the opportunity for feeding and to ensure high yields. Normal concentrates are fed 3 times a day, green feeds are fed 1 or 2 times a day, and fresh shellfish and other animal feeds are fed once a day.
Fertilizers for ponds that mainly use fertilizers for water-based fish should pay attention to reasonable fertilization in summer. Prevent improper fertilization and deteriorate water quality. In May and June, organic fertilizer is used as the main fertilizer, usually 7 to 10 days for fertilization; in July to September, organic fertilizer is applied or stopped, and chemical fertilizer is applied. Fertilizer is applied once every 4 to 6 days. The specific fertilization amount is determined according to the pool water, water quality, weather conditions, etc. It is generally applied according to the principle of "a few times".
Diligent water transfer In summer, the water temperature is high and the water quality changes rapidly. At the same time, the amount of feed is large in summer, and fish discharges are many and the water quality is easily contaminated. Therefore, the adjustment of water quality should be strengthened. 1 Regularly add new water. Generally, add water or change the water every 7~10 days. Change the water every time by 10~15cm and keep the water level above 1.5~2 meters. Usually pay attention to observation, according to the water quality in time to take the water, change the water to adjust the appropriate measures to ensure that the pool water conservancy fish growth. 2 aerator oxygenation. The intensive nutrient pool should be installed with an aerator in the summer, and aerators should be used to adjust the water quality at 2 to 3 o'clock on a sunny day. When there is a risk of floating heads, aerators should be used to increase oxygen. 3 other methods. In the summer, other auxiliary methods are used to regulate water quality, such as stirring the bottom of the pool regularly to promote the circulation and metabolism of the material; removing the dirt in time, preventing the contamination of the residual bait, timely killing the blisters and other drug adjustment methods.
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