The first is to do clear disinfection work. The pond is a habitat for fish, and it is also a place where various disease organisms are hidden and propagated. Clearance of clear ponds is an important part of preventing and reducing epidemic outbreaks. To do this well can reduce the losses caused by fish diseases.
The second is to do water quality fertilization work. After the clear pond is over, decomposed organic fertilizer can be properly applied to cultivate plankton in the water. On the one hand, the fertilized fish can feed on the other hand. On the other hand, photosynthesis of the phytoplankton can increase the dissolved oxygen in the pool water, which is beneficial to fish growth. Generally, about 100 kilograms of organic fertilizer is applied per acre of water surface, and new ponds can be used for digging more, while fertilizer and water ponds with more sediment can be used less or not.
The third is to do a good job in fish selection. Should choose the specifications of tidy, strong physique, full muscle, bright color, complete scales of the fish species, should try to put the specifications of the main breeding species, in favor of breeding management and unified listing.
The fourth is to do a good job of disinfection of fish into the Tongguan. In particular, fish species purchased from other places must be disinfected when they are stocked. Generally, 3% to 5% of salt solution can be used to soak fish seeds for 5 to 10 minutes or 10 ppm of potassium permanganate solution to soak fish seeds for about 20 minutes.
The fifth is to accurately determine the time of stocking. The stocking is too early, the weather is cold, and it is easy to freeze and damage the fish. If the stocking is too late, it will easily damage the fish and the survival rate of the stocking is low. The best restocking time should be chosen on sunny, windless days, and fish should not be stocked on rainy or freezing days.
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