The autumn season and the appropriate temperature are the seasons with the fastest growth of fish and long fat growth. It is also a crucial period for the harvest of fisheries throughout the year. Therefore, it is particularly important to grasp the management of fish ponds in the autumn.
Strengthen water quality management
Every day, the leftover bait and debris are picked up, and new water is added in time according to the weather and fish activity.
Prevent water quality deterioration
Water-friendly ponds should be maintained with micro-flowing water or washed once every 10 days. For ponds lacking water sources, the average water depth is 1 meter per acre, and 15-20 kilograms of quick lime are stacked in the waters around the pond for 15-30 days; water depth of 1 meter per acre can be used, and 10 kilograms of quick lime can be used to add water to dissolving. Spilled to clarify the pond water. The pond where the aerator is placed should catch every sunny day and start the aerator to send the upper dissolved oxygen layer to the lower layer to reduce nighttime oxygen deficiency.
Top dressing bait
In the autumn, water should be fertilized and cultivated to enrich the biological bait in the water to meet the growth needs of fish, eels, and other fish. At the beginning of autumn, the temperature is higher, and the fertilization persists less often. If it is a fertilizer pond, a small amount of fertilizer is applied to prevent deterioration of water quality and maintain good water quality that is fat, live, tender and cool. Generally, 2.5 kg of urea and 5 kg of superphosphate are used to make the pool water green or tea green; if it is a semi-thin water pond, the livestock and poultry excrement mainly used for fermentation is 400-500 kg. - Once applied for 10 days, plankton can be rapidly cultivated to meet the needs of fish feeding.
Feeding
After 10 months, according to the nutritional requirements of different main cultured fish, the food is scientifically formulated and baited once a day. The amount of feeding generally accounts for 1%-3% of the fish's body weight, and feeding can be continued until mid-November.
Control source
The bait and debris in the pond should be removed every day, and new water should be added in time according to the weather and the activities of the fish. Usually every half a month with 250 grams of bleaching powder dissolved in water, sprinkle around the food market, continuous spilled 3 days, you can also add garlic powder (0.5 kg per 100 kg feed), salt (100 kg feed plus 1 Kilograms) Prevention of bacterial fish disease. After the copper sulfate and ferrous sulfate mixture was dissolved in water, the whole pool was splashed (0.5 g of copper sulfate and 0.2 g of ferrous sulfate per cubic meter of water) to prevent parasitic diseases. At the same time, we must pay attention to the prevention of gills, enteritis, red skin and other diseases. If there are too many fish ponds with green mud, you can splash copper sulfate in Quanchipi, and apply 0.7 grams per cubic meter of water. Add water to dissolve the entire pond, or sprinkle 50 kg of plant ash per acre. Sprinkle it on the blue mud moss and make the blue mud moss not visible. Sunshine and death.
Prepare for the winter
Over-winter fishing ponds should be sterilized in clear ponds; ponds should be 2-3 meters deep, and the deeper the water, the more they can keep warm; the soft, carnivorous fish such as soft-shelled turtles, squid, and leather beard can not be mixed for the winter, so that they will not be killed. phenomenon. For ponds where tropical and subtropical fish live in winter, 80-100 square meters of anti-frost sheds should be built per mu, with sedges or woven films, in the deepest position of a leeward pond, and about 20 centimeters away from the water surface.
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