In order to increase the survival rate of fish species and ensure the smooth progress of fishery production throughout the year, the majority of fishermen friends must do the following seven tasks.
The first is to do a good job of dredging and disinfection of ponds. Ponds are places where fish live inhabit, and they are also places where various pathogenic organisms are hidden and propagated. Dredging and disinfection of ponds is an important part of preventing and reducing epidemic outbreaks. Doing this work can minimize the risk of fish diseases. Loss.
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%-5% of salt solution can be used to soak fish seeds for 5-10 minutes or 10 ppm of KMnO4 aqueous solution to soak fish species for about 20 minutes. Medicinal bath concentration and time flexibility.
Fifth, the temperature difference in stocking should not be too large. After long-distance transport of fish species into the pond, the transport water temperature and the pond water temperature should be adjusted so that the temperature difference is less than 3°C. The pond water can be gradually added to the transport tank for adjustment to prevent the death of the fish species due to the abnormality of the internal organs of the fish caused by the drastic changes in the water temperature.
The sixth 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 optimal water temperature for restocking should be 7-8°C, and it is not easy to injure fingerlings when transporting by net. Stocking time should be chosen on days when there is no wind on sunny days, and fish should not be stocked on rainy days and frozen days.
The seventh is reasonable stocking. First, the density of the main breeding stocks to be stocked should be reasonable; second, the mix of mixed breeds should be reasonable. The stocking density must be based on pond conditions, water sources, electricity, capital, technology and other specific considerations. In the intensive culture of carp ponds, 1,500-2,500 catfish are reared in the mu, which accounts for about 80%, and 300-500 in the polyculture, accounting for about 20%.
The stocking of fingerlings is related to the success or failure of the entire aquaculture production process and the level of aquaculture benefits. Therefore, we must do a good job in this basic work.
Garlic Minced,Garlic Chips,Dried Garlic Granules,Frozen Garlic
Huaiyang County Wanyuan Garlic Foods Processing Industries Co.,Ltd , https://www.wanyuangarlicfood.com