The depth of pond culture should be adjusted according to different seasons. Deep water is suitable for winter and summer, which can keep warm in winter and cool down in the bottom waters of deep water in summer; In spring and late autumn, raising the water temperature by using the principle of "shallow water warming" is beneficial to fish eating in early spring, stimulating appetite and promoting growth; In late autumn, fish should eat more food to store energy for winter.
Extended data:
Effect of water depth on fish in pond culture
1. When the water depth is less than 1.5m, firstly, the output cannot be improved; Secondly, the internal balance system of water body is easy to be broken, especially in summer, when the weather is hot and the direct sunlight is strong, the water temperature will rise rapidly. Because the water body is too shallow, it can't adjust the temperature itself, which will cause fish heatstroke;
2. When the water depth is more than 3m, the oxygen production capacity will drop rapidly due to insufficient or no illumination at the bottom of the water body, resulting in insufficient dissolved oxygen or super-anaerobic, which makes the fish unable to move at the bottom of the water body, thus wasting water and increasing the breeding cost.
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