Autumn pond fish fattening six measures
2018-06-13 20:01:02
Autumn is the season of fish fatten long fat, do a good job feeding and management of this period, the long-term aquatic scientists test, manage than normal yield more than 30%. Therefore, it is important to fatten the pond fish in autumn. If tropical fish (fish O'Neill Pacu, clay mud, leather Catfish, etc.) can catch up before winter and early market, reduce winter frostbite death loss; not on the city, after fattening can enhance the ability of fish to keep warm It lays a good foundation for the safe winter of fish. The measures are as follows:
I. Improve water quality
Maintaining good water quality and creating a good environment for fish growth are the key to promoting the growth of fish. Usually 7-10 days, a new water injection, each changing the amount of water is 20-30 cm; Second, the surface of lime per acre sprinkle 20 kg of lime, quicklime can neutralize acidic, increase PH value, release nutrients, improve water quality and sediment quality, each Spilled once or twice a month. If it is a village-side fertilizer pond or a fish pond that is mainly fed with concentrate feed and the supporting livestock farm pond, the water quality is easily eutrophic, and it is better to use a bamboo pole bar to ring 50-60 square meters of water per acre pond. Water-lilies and daffodils absorb excessive ammonia nitrogen to achieve improved water quality control. The daffodil leaves can feed grass-fish and kill two birds with one stone.
Second, top dressing bait
Due to the existence of the food chain in fish farming, pupa and squid filter-feeding plankton, autumn should see water fertilization, and cultivate rich biological feed in water to meet the growth needs of alfalfa and cockroaches. The temperature is higher at the beginning of autumn and the fertilization should be less. If it is a fertilizer pond, a small amount of fertilizer is applied to prevent deterioration of the water quality while maintaining good water quality. Generally 2.5 kg of urea per mu, 5 kg of superphosphate (nitrogen and phosphorus structure), can keep the pool water green or tea green. If it is a semi-thin pond of clear water, the excrement of human feces that is fermented is mainly based on 400-500 kilograms per acre, applied once every 7-10 days, and plankton can be quickly cultivated to meet the needs of fish feeding. At the end of autumn, the water temperature gradually decreases. Organic fertilizers should be used as the main means to make the pool water become richer and richer, promote the reproduction of plankton, and provide sufficient nutrient food for wintering of fishes.
Third, ensure the feeding of nutritious feed
The temperature in autumn has dropped significantly and the temperature difference between day and night is large, and fishes begin to accumulate energy to prepare for winter. On the one hand, to ensure adequate feeding of green fodder, feed it once every morning and afternoon, and it is advisable to eat it within 2 hours each time. On the other hand, it is necessary to increase the feeding of concentrate feed. Mixing with wheat husk, maize, peanut bran, yellow powder, etc. can be used. Feed once a day, and the amount of fish fed is 2.5% to 3% of the total amount of fish. After October, they will vote for 3%-4%, and increase it appropriately to ensure that the fish will grow for long-term nutrition.
Fourth, prevent floating head
In the autumn, for ponds with higher intensive density and higher yields, due to large amount of fertilization, organic matter content, frequent fish activity, and prone to hypoxic floating head phenomenon, it is necessary to strengthen the situation in the morning and evening, especially during the second half of the night. Tour pond. When feeding, once the fish population is found to be eating less food and eating time is prolonged, the residual bait in the pond will increase, especially if the grass carp is full of grass and there is no sign of eating grass, indicating that the water begins to lack oxygen. If waves can be seen on the surface of the water during the day, fish groups may be frightened and visible waves appear on the surface of the water. This indicates that “drifting heads†have appeared. If measures are not taken in time, flooding may occur. When fish heads are found to have signs of floating heads, they will start aerators to increase oxygen, or discharge new water into ponds to increase the amount of dissolved oxygen, and properly discharge part of the old water. If there is no new water infusion and there is no aeration machine to increase oxygen, use 5 kg of alum or 20 kg of salt per acre to dissolve the sprinkling, or use an oxygenating agent according to the instructions. The impurities and grasses in the clean water can be used to reduce the pollution and purify the water quality. This has the effect of weakening and preventing the floating head.
V. Prevention of fish diseases
The appetite of autumn fish is strong, the gluttony is violent, and it is prone to symptoms such as gill rot and red skin. Each month, 1 mu of water has a depth of 1 meter, bleaching powder, 2 pounds of water, and the whole pond is splashed with Keweiwei and fish. Mixed feed is fed once; if there is a disease, it is sterilized twice in a row, and once it is fed for one treatment (4 to 5 days), the fish disease can be cured. In short, prevention and treatment of fish diseases, prevention-based, prevention and control combination, and consideration of water quality, feeding, and disease prevention are effective.
Six, to prepare for the winter
If you don't reach the market-sized pond fish through autumn fattening, you have to prepare for the winter. Some pond fish should be divided into varieties and sub-species ponds for winter (ferocious carnivorous fish such as soft-shelled turtles, squid, grass beard, mountain spot fish, earthworm ponds, etc., do not mix and bred, so as to avoid eating too much. , strong food weak kill each other ); some ponds have to clear pond disinfection, fertilization water quality, so that the fish (fish species) in the transfer pond has a good wintering environment; universal ponds should be filled with deep water, (2 - 3 meters deep) The deeper the water, the warmer; the ponds where the tropical and subtropical fish spend winter have to take a frost shed, using sedges or braided film on top of the deep-lying leeward pond where the water temperature is highest. (20 centimeters from the surface of the water) Mu 80-100 square meters, can also be stacked around the base pond in Tangtou usually prepared turf mud, pay attention to weather broadcasts, when the cold wave ignition smoke smoke melting snow, expel cold air, can also be To the role of insulation.
I. Improve water quality
Maintaining good water quality and creating a good environment for fish growth are the key to promoting the growth of fish. Usually 7-10 days, a new water injection, each changing the amount of water is 20-30 cm; Second, the surface of lime per acre sprinkle 20 kg of lime, quicklime can neutralize acidic, increase PH value, release nutrients, improve water quality and sediment quality, each Spilled once or twice a month. If it is a village-side fertilizer pond or a fish pond that is mainly fed with concentrate feed and the supporting livestock farm pond, the water quality is easily eutrophic, and it is better to use a bamboo pole bar to ring 50-60 square meters of water per acre pond. Water-lilies and daffodils absorb excessive ammonia nitrogen to achieve improved water quality control. The daffodil leaves can feed grass-fish and kill two birds with one stone.
Second, top dressing bait
Due to the existence of the food chain in fish farming, pupa and squid filter-feeding plankton, autumn should see water fertilization, and cultivate rich biological feed in water to meet the growth needs of alfalfa and cockroaches. The temperature is higher at the beginning of autumn and the fertilization should be less. If it is a fertilizer pond, a small amount of fertilizer is applied to prevent deterioration of the water quality while maintaining good water quality. Generally 2.5 kg of urea per mu, 5 kg of superphosphate (nitrogen and phosphorus structure), can keep the pool water green or tea green. If it is a semi-thin pond of clear water, the excrement of human feces that is fermented is mainly based on 400-500 kilograms per acre, applied once every 7-10 days, and plankton can be quickly cultivated to meet the needs of fish feeding. At the end of autumn, the water temperature gradually decreases. Organic fertilizers should be used as the main means to make the pool water become richer and richer, promote the reproduction of plankton, and provide sufficient nutrient food for wintering of fishes.
Third, ensure the feeding of nutritious feed
The temperature in autumn has dropped significantly and the temperature difference between day and night is large, and fishes begin to accumulate energy to prepare for winter. On the one hand, to ensure adequate feeding of green fodder, feed it once every morning and afternoon, and it is advisable to eat it within 2 hours each time. On the other hand, it is necessary to increase the feeding of concentrate feed. Mixing with wheat husk, maize, peanut bran, yellow powder, etc. can be used. Feed once a day, and the amount of fish fed is 2.5% to 3% of the total amount of fish. After October, they will vote for 3%-4%, and increase it appropriately to ensure that the fish will grow for long-term nutrition.
Fourth, prevent floating head
In the autumn, for ponds with higher intensive density and higher yields, due to large amount of fertilization, organic matter content, frequent fish activity, and prone to hypoxic floating head phenomenon, it is necessary to strengthen the situation in the morning and evening, especially during the second half of the night. Tour pond. When feeding, once the fish population is found to be eating less food and eating time is prolonged, the residual bait in the pond will increase, especially if the grass carp is full of grass and there is no sign of eating grass, indicating that the water begins to lack oxygen. If waves can be seen on the surface of the water during the day, fish groups may be frightened and visible waves appear on the surface of the water. This indicates that “drifting heads†have appeared. If measures are not taken in time, flooding may occur. When fish heads are found to have signs of floating heads, they will start aerators to increase oxygen, or discharge new water into ponds to increase the amount of dissolved oxygen, and properly discharge part of the old water. If there is no new water infusion and there is no aeration machine to increase oxygen, use 5 kg of alum or 20 kg of salt per acre to dissolve the sprinkling, or use an oxygenating agent according to the instructions. The impurities and grasses in the clean water can be used to reduce the pollution and purify the water quality. This has the effect of weakening and preventing the floating head.
V. Prevention of fish diseases
The appetite of autumn fish is strong, the gluttony is violent, and it is prone to symptoms such as gill rot and red skin. Each month, 1 mu of water has a depth of 1 meter, bleaching powder, 2 pounds of water, and the whole pond is splashed with Keweiwei and fish. Mixed feed is fed once; if there is a disease, it is sterilized twice in a row, and once it is fed for one treatment (4 to 5 days), the fish disease can be cured. In short, prevention and treatment of fish diseases, prevention-based, prevention and control combination, and consideration of water quality, feeding, and disease prevention are effective.
Six, to prepare for the winter
If you don't reach the market-sized pond fish through autumn fattening, you have to prepare for the winter. Some pond fish should be divided into varieties and sub-species ponds for winter (ferocious carnivorous fish such as soft-shelled turtles, squid, grass beard, mountain spot fish, earthworm ponds, etc., do not mix and bred, so as to avoid eating too much. , strong food weak kill each other ); some ponds have to clear pond disinfection, fertilization water quality, so that the fish (fish species) in the transfer pond has a good wintering environment; universal ponds should be filled with deep water, (2 - 3 meters deep) The deeper the water, the warmer; the ponds where the tropical and subtropical fish spend winter have to take a frost shed, using sedges or braided film on top of the deep-lying leeward pond where the water temperature is highest. (20 centimeters from the surface of the water) Mu 80-100 square meters, can also be stacked around the base pond in Tangtou usually prepared turf mud, pay attention to weather broadcasts, when the cold wave ignition smoke smoke melting snow, expel cold air, can also be To the role of insulation.