Loach seedlings are generally placed before and after the vernal equinox, and the newly purchased loach seedlings are weak and do not pay attention when they enter the pool. This may cause a greater loss, or even "fall in the army." Therefore, when the loach seedlings enter the pool, we must pay attention to the following points: 1, the dense network Latang clear damage Muddy seedlings must use a dense mesh to pull empty ponds several times before entering the pond. On the one hand, the remaining clear ponds accumulated in the bottom of the pool of drugs to fully dissolve, to prevent poisoning seedlings; on the other hand to further eliminate the enemy, if they find the enemy can be used 0.5 grams / cubic meter concentration of trichlorfon Quanchiposa to kill . 2, test clear pond effect Before the muddy seedlings enter the pool, check whether the drug toxicity of the clear pond disappears and whether the water's fatness is appropriate. First, take half a barrel of water, because sometimes the surface water toxicity has disappeared, but the underlying virulence is still very strong, the muddy seedlings into the water to observe 8-10 hours to see if normal, to determine whether the muddy seedlings can enter the pool. Secondly, the water's fatness can be judged according to the water color, transparency, and the biological condition of the fish. If the pool water is found to be too fat, the water can be adjusted and adjusted; the water of the pool water is not enough, and a small amount of chemical fertilizer or fermented dung should be added immediately or increased. Food. 3, to do a slow seedling treatment When the muddy seedlings enter the pool, the temperature of the pool water must not be lower than 3°C. If the water temperature difference is too large, you should gradually adjust the temperature difference, muddy seedlings adapted to enter the pool. For muddy seedlings transported in plastic bags, the opening of the plastic bag should be slowly put into a pre-placed water tank before entering the pool. After 10-20 minutes, the muddy seedlings and water are slowly poured into the tank to adjust the water. The adaptation of temperature difference and muddy seedlings to changes in air pressure inside the bag is called “slow seedlingsâ€. If the loach seedlings were found lying supine when the bag was opened, this is a phenomenon of carbon dioxide poisoning. As long as the seedlings are kept in easing, they can be restored after putting in fresh water for a while. If the muddy seedlings are directly poured into the pool from the bag, even if the naked eye observes normal life when stocking, death will occur after the lower pond, that is, it will die after transportation. Therefore, seedling treatment is an essential and important step. In addition, the muddy seedlings should be disinfected before entering the pool. Can be soaked in 1% baking soda for 20-30 minutes. 4, insist on satiety pond The production practice of seedling rearing shows that if the seedlings are fed with 1-2 cooked egg yolks or feed yeast before entering the pond, it would be more desirable if the rotifers could be fed. The survival rate or growth rate of the seedlings was significantly higher than that of non-feeding. After the seedlings arrive, feed them with cages and re-enter the pool. When taking the seedlings in the cage, the seedlings in the upper head usually have stronger constitution and the individuals are larger. The seedlings in the downcast seedlings are of poorer constitution and the individuals are smaller, so that the individual size can be different and the constitution is different. The seedlings are basically separated. 5, deep water veneer seedlings According to the experiment, the seedlings were poured into water from a height of 30 cm and only damaged 5%-10%. When the height was 60 cm above the water surface, the damage rate of the fry could reach 20%-30%. Therefore, the seedlings should be selected when they are in the deep water, close to the surface of the water and put the seedlings slowly. If the seedlings are found to be densely integrated, they should be splashed with water droplets to spread them into the pool. When it comes to windy weather, it is necessary to enter the pond in the deep waters of the upper winds to prevent the seedlings from being blown to the pool slope or to the bottom of the pool and causing casualties. 6, consistent stocking specifications The same pond should be stocked with the same seedlings of the same specifications. Try to put in enough time to avoid the occurrence of large fish and small fish out of specifications. The seedlings with inconsistent specifications are stocked together. The growth rate of big seedlings is much faster than that of young seedlings, and polarization is even more pronounced. In addition, the timing of the seedlings in the lower pond is not clear on a sunny day. Avoid wind, rain or night swimming. Peru Squid ,Peru Jumbo Flying Squid,Peru jumbo flying squid Zhoushan Boda Aquatic Products Co.,Ltd , https://www.baida-aquatic.com