ecosystem
The cultivation of pollution-free grass carp should have a special breeding base and form a certain scale. There should be no pollution sources around the base, such as industrial waste, agricultural waste, pesticides, domestic sewage, and various garbage. The breeding base should have sufficient water supply and good water quality, meet the "Quality Standard for Freshwater Aquaculture Water for Non-environmental Foods", have smooth water intake and drainage, have no connection between fish ponds, convenient transportation, rich feed resources and good ecological environment. The area of ​​fish ponds is best from 5 to 10 mu, and the water depth is about 2 meters. Ponds should remove excess silt. After exposure in winter fish ponds, 10 to 20 centimeters of water is injected 10 days before the release of fish species. Each mu is disinfected with 150 kg of quicklime. After 2 to 4 days, the water is discharged. The water that is injected into the fish ponds must be filtered and the manure applied must be filtered. After disinfection, enter the pool to prevent disease and harmful organisms from flowing into the pond with water.
Fish species stocking
In order to maintain a good grass carp, you must use healthy and lively quality fish species. The fish species must be disinfected before putting them in. Chlorine dioxide can be used to disinfect 20~40 mg/L for 5~10 minutes; salt 1~3% for disinfection 10~ 15 minutes; Potassium permanganate 10 to 20 mg/L for 5 to 10 minutes. Fish species will be introduced into the pond before the beginning of March. The ponds with better conditions will be filled with 250-500 g/tail of large-size grass carp, and 200 g/tail may be placed at a density of over 500 tons. If there is no clean running water, aerators should be prepared. Stocking ratio should be set at 80:20 in stocking mode, ie 80% of the main grass carp should be stocked with fish (with 200 carp, 50 carp, 80 carp Such as, with fish specifications than grass carp) 20%, in addition to a small amount of carp can be used to make full use of the water space and residual baits to improve the breeding efficiency.
Water quality regulation
The quality of the grass carp is important, and it is important to keep the water fresh and hygienic. It is required to ensure that the pool water is “fat, tender, cool and liveâ€, adding 5 to 10 cm of fresh water every 3 days to 5 days to increase the vitality of the water, increase dissolved oxygen, increase the reproduction of plankton, and meet the requirements of carp and carp. The need for bait also stimulates the rapid growth of grass carp. Equipped with oxygen aerator to keep the water fresh and dissolved oxygen properly. At the same time, every second month, 10 to 20 kg of lime are poured per acre. Transparency is best maintained at 25 to 30 cm, dissolved oxygen 3 to 5 mg/l, pH 7.5 to 8.0.
Feed feeding
The bait is mainly composed of green fodder, and the insufficient portion is fed with pellet feed (replaceable with big trout feed). The feeds are fed according to the principles of “four-determined†and “four-viewingâ€. Generally, they are fed 3 times a day. The time is from 8 to 9 o'clock in the morning, from 15 to 16 o'clock in the afternoon, and in the evening, and green materials are fed in the evening. The amount of daily feeding was 30 minutes each time; the green material was 30 to 50% of the grass carp weight, and finished in 2 hours. The specific feeding amount is increased or decreased according to the season, weather, water temperature and food intake, and it is appropriate to eat fish with “Bachengâ€.
The cultivation of pollution-free grass carp should have a special breeding base and form a certain scale. There should be no pollution sources around the base, such as industrial waste, agricultural waste, pesticides, domestic sewage, and various garbage. The breeding base should have sufficient water supply and good water quality, meet the "Quality Standard for Freshwater Aquaculture Water for Non-environmental Foods", have smooth water intake and drainage, have no connection between fish ponds, convenient transportation, rich feed resources and good ecological environment. The area of ​​fish ponds is best from 5 to 10 mu, and the water depth is about 2 meters. Ponds should remove excess silt. After exposure in winter fish ponds, 10 to 20 centimeters of water is injected 10 days before the release of fish species. Each mu is disinfected with 150 kg of quicklime. After 2 to 4 days, the water is discharged. The water that is injected into the fish ponds must be filtered and the manure applied must be filtered. After disinfection, enter the pool to prevent disease and harmful organisms from flowing into the pond with water.
Fish species stocking
In order to maintain a good grass carp, you must use healthy and lively quality fish species. The fish species must be disinfected before putting them in. Chlorine dioxide can be used to disinfect 20~40 mg/L for 5~10 minutes; salt 1~3% for disinfection 10~ 15 minutes; Potassium permanganate 10 to 20 mg/L for 5 to 10 minutes. Fish species will be introduced into the pond before the beginning of March. The ponds with better conditions will be filled with 250-500 g/tail of large-size grass carp, and 200 g/tail may be placed at a density of over 500 tons. If there is no clean running water, aerators should be prepared. Stocking ratio should be set at 80:20 in stocking mode, ie 80% of the main grass carp should be stocked with fish (with 200 carp, 50 carp, 80 carp Such as, with fish specifications than grass carp) 20%, in addition to a small amount of carp can be used to make full use of the water space and residual baits to improve the breeding efficiency.
Water quality regulation
The quality of the grass carp is important, and it is important to keep the water fresh and hygienic. It is required to ensure that the pool water is “fat, tender, cool and liveâ€, adding 5 to 10 cm of fresh water every 3 days to 5 days to increase the vitality of the water, increase dissolved oxygen, increase the reproduction of plankton, and meet the requirements of carp and carp. The need for bait also stimulates the rapid growth of grass carp. Equipped with oxygen aerator to keep the water fresh and dissolved oxygen properly. At the same time, every second month, 10 to 20 kg of lime are poured per acre. Transparency is best maintained at 25 to 30 cm, dissolved oxygen 3 to 5 mg/l, pH 7.5 to 8.0.
Feed feeding
The bait is mainly composed of green fodder, and the insufficient portion is fed with pellet feed (replaceable with big trout feed). The feeds are fed according to the principles of “four-determined†and “four-viewingâ€. Generally, they are fed 3 times a day. The time is from 8 to 9 o'clock in the morning, from 15 to 16 o'clock in the afternoon, and in the evening, and green materials are fed in the evening. The amount of daily feeding was 30 minutes each time; the green material was 30 to 50% of the grass carp weight, and finished in 2 hours. The specific feeding amount is increased or decreased according to the season, weather, water temperature and food intake, and it is appropriate to eat fish with “Bachengâ€.
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