Novice fish pond culture

June-August is the best time for cultured fish to eat more and grow faster, and it is also the popular season for fish diseases. Therefore, the management of fish pond culture should focus on disaster prevention, feeding and disease prevention.

The first is to enhance the awareness of disaster risk. Every summer is the concentrated period of typhoon and rainstorm, and governments at all levels should establish the awareness of disaster risk. Each fish farm should check the flood control drainage ditch around the fish pond, the entrance and exit gates of the pond foundation, the livestock pens, etc., to prevent the collapse and landslide, and immediately repair and reinforce the danger when it is found, so as to nip in the bud.

Second, pay attention to regulating water quality. 1. Adjust the pH value of water with quicklime. Summer is the typhoon and rainstorm season, and the yellow mud washed down by mountain torrents will inevitably flood into the pond. Moreover, natural water is acidic, so it is necessary to adjust the pH value of water body with quicklime regularly. Generally, per mu 1m water depth, quicklime 15-20kg is sprayed in the whole pond once every15 days to make the pH value between 7.5 and 8.5. 2. Regularly use micro-ecosystem to regulate water quality. Commonly used microecological agents are photosynthetic bacteria and Bacillus. Especially after a long period of heavy rain, the ecological environment of fish ponds has been hit hard, and even the microecological balance has been destroyed. At this time, it is particularly important to use microorganisms and bacteria in time to repair the micro-ecological cycle and create a good water quality environment for fish growth. 3. Wash and change water regularly. Especially after heavy rain, the water in general fish ponds is turbid and easy to deteriorate. When it is stable, it should be flushed in time to keep the aquaculture water fat and tender. 4. Start the aerator at the right time, and start the aerator for aeration when the low-pressure fish will float in the morning. If the area of the pond mouth is large, the aerator can't solve the problem of floating head for a while, and immediately add the aerator to save the fish from floating head death due to lack of oxygen.

Third, the prevention and treatment of fish diseases. Summer is hot and rainy, which is the epidemic season of fish diseases. Viruses, bacteria, parasites and cyanobacteria can easily lead to illness and death of fish. Under normal circumstances, chlorine-containing drugs such as bleaching powder, yujunqing and so on. Disinfect the water regularly to kill bacteria and viruses, use the mixture of copper sulfate and ferrous sulfate (5:2) to kill parasites and cyanobacteria (commonly known as green skin water), use quicklime to adjust the pH of the water body, and at the same time feed the same amount of bloodletting oral medicine bait to accelerate the healthy growth of fish and improve the disease resistance.

Fourth, do a good job in the cultivation and management of fry. At the beginning of the year, due to frost, low temperature and rainy weather, a large number of tilapia, shad, freshwater shad, catfish and other varieties (including parent fish, adult fish and fry) were frozen to death for a long time, which led to the postponement of the seedling raising season this year. June is the cultivation period of these seedlings, so we must carefully manage them, cultivate more healthy seedlings in autumn and winter and next spring, and make new contributions to increasing fishery production, income and efficiency and building a harmonious and well-off society.