During the winter, the main job of pond culture is to harvest and release fingerlings. Around these two central tasks, what are the main tasks of winter pond management? 1. In the process of dry pools and dry pools for fish sales, pay attention to the fact that, as the water level goes down, catch fish as much as possible by pulling the nets to avoid the sudden death of large numbers of fish in the fish pit. If it is the pond of the main scorpion fish and squid, it should be as early as possible before the dry pool of October, or else it will miss the best selling season of these two kinds of fish. For polyculture ponds, after dry ponds, grass carps of 1.5-2 kg/tail can be sold first, and grass fish weighing over 2.5 kg per tail can be sold after the winter solstice. For grass carp, scorpion fish, squid, etc., which cannot be sold or at low prices, they will be transferred to the wintering pond. Second, the clear pond and disinfection of this work is very important, but due to a variety of factors, a large part of the farmers have not attracted enough attention. In the past two years, due to the fickleness of the climate, the disinfection of ponds has not been careful, fish diseases have occurred frequently, and the outbreaks have become increasingly severe. In particular, this year, grass carp disease, gill disease, and haemorrhagic disease have caused haemorrhoids, lice, and fleas. It has caused major losses to some farmers. The rare spore-forming diseases have also occurred frequently in recent years. All this shows that the prevention of fish diseases is a matter of no delay, and clear pond disinfection after dry ponds is the first step in fish disease prevention. It is directly related to the severity of fish disease in the culture in the next year. Disinfectant We still recommend using lime as the main ingredient and bleaching powder as the supplement. In light of the increasing severity of fish diseases in recent years, we suggest that the amount of quicklime and bleaching powder be increased on the basis of traditional dosages. Specific dosages are as follows: water depth is 1 meter per mu. Lime 200 kg or 20 kg of bleached water with clear pond, or 100 kg of quick lime per acre or 10 kg of bleached dry pool disinfection. Third, determine the breeding mode of the next year breeding mode is the key to the success or failure of culture, the adjustment of the mode of cultivation should be determined in accordance with market requirements, pond conditions, and the level of culture. Fourth, according to the design of breeding fish species, to prepare enough fish species, need to be particularly pointed out that every year from July to August sales of grass carp is not prosperous, so the specifications of grass carp species should be two, not the middle, that is only put 750 grams / Above the tail and 100-250 g / tail grass species. In addition, the size of the head lice and squid should not be too small, and it is better to reach 50 grams or more in order to adapt to changes in market prices. Due to the large concentration of disinfecting drugs, it is necessary to first cast a few test fish before putting the fish species, and then put the fish species after the water quality is determined. Fifth, the winter management will control the water level in the deeper water level. When the water level drops, the new water should be properly filled. Every morning and evening, the patrol ponds will be once. When the temperature is warmer, the feed should be fed properly so that it can grow quickly after the spring and seize market opportunities.
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500*600mm
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700*600mm
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