Pond culture techniques
2019-06-05 08:04:14
According to the author's experience in breeding squid in recent years, I believe that to achieve high yield and high efficiency in breeding ponds, we must do the following:
First, choose a better pond. Pond area should not be too large, generally 5-10 acres can be, the water depth of 1.5-2 meters, less silt, into the drainage convenient, especially in the newly excavated pond is best.
Second, make preparations before stocking. Before stocking squid, clear the pond, excavate excess silt, and fully expose the bottom of the pool. About 20-30 days before the release of seedlings, release 6-8 cm. Mu with 75 kg of quicklime Quanchiposa, disinfection of the pond. Disinfection, irrigation 60-80 cm, culture water quality. Drainage is applied with a dense mesh filter to prevent wild fish and predators from entering the pond. After 5-7 days of disinfection, after the test of fish is released to prove that the toxicity of the drug in the pond has disappeared, the whole net is used to pull the net once, in order to carry out the killing of the enemy organisms in the pond, and 8-100 million of flowers are placed per acre. Feeding soymilk or rice bran to the squid before stocking, 15 days later, you can feed different sizes of squid depending on the specifications of the bait. General requirements of carp seedlings specifications to 5-7 cm long is good, acres put 1000-1200 tail; put 1-2 days before the pot seedlings replace the pool water, per acre with salt 5-7 kg of water Quanchiposa to clarify the pool of water . In front of the squid under the pond application of salt water or potassium permanganate and other drugs dip disinfection.
Third, the good food off. Keeping ponds with adequate and palatable bait fish is an important measure to promote the rapid growth of squid and reduce the feed coefficient. After carp ponds should be carefully observed feeding status of carp, and estimate the bait fish density. Such as the success of the pond, the original fish pond food can be fed for more than 10 days, so depending on the actual situation at any time ready to supplement the bait fish; bait fish specifications for its body length of 40% -60% of the body length of the carp The body height should be less than the caliber of the carp; the amount of each feeding should be enough for the squid to eat for 4 to 5 days. It should not be more or less, and sometimes not. In short, it is necessary to keep the pond bait fish dense enough to make it easier for the carp to prey. The feeding rate of squid is different under different water temperature conditions during different growth periods. Therefore, diligent observation and flexibility should be used for this purpose. When the bait fish is sufficient, a large amount of fresh manure floating on the surface of the pond can be observed. Before the sunrise or sunset, the bait fish cluster into the edge of the pool, and it is found that the bait fish are frequently chased by the squid. Before feeding the bait fish, choose 60-100ppm formalin, 8ppm copper sulfate, 20ppm potassium permanganate and other drugs to sterilize the baitfish for different sources of bait. The dipping time should be 10-30 minutes.
Fourth, keep the water in the pool fresh and have sufficient dissolved oxygen. The carp nature likes clear and fresh water quality. It has high requirements for dissolved oxygen in living water bodies and poor resistance to hypoxia. Therefore, every 31 days depending on water quality and weather changes, people should be injected with fresh, pollution-free river water. 10-20% of the amount of pond water is appropriate. It is better if the micro-flow state of the pool water can be maintained. In general, copper sulfate and ferrous sulfate mixture should be replaced after 3 to 5 days, and formalin should be changed after 8 to 12 hours to avoid the influence of residual drugs and dead algae on water quality. According to the changes in the weather, it is possible to flexibly grasp the time and number of times the aerator is turned on. When the weather is hot, it is found that the squid has spit out the bait fish phenomenon. It is necessary to start the aerator and infuse the new water in time to keep the water body full of dissolved oxygen.
Fifth, timely prevention and treatment of fish disease. Meal seedlings are susceptible to parasites during the seeding period, and the most harmful ones are: trichoderma, oblique worms, fish larvae, and anchor head lice. The prevention and treatment of fish gills and anchor heads can be controlled by 0.3-0.4ppm B extermination, 0.4ppm trichlorfon, and 0.08-0.1ppm potent extermination. The effect of 0.7ppm copper sulfate, ferrous sulfate mixture (5:2), 0.4-0.45ppm copper sulfate and potassium permanganate mixture (5:2) was selected for the trichomonads and the oblique worms. If the occurrence of pests is severe, the whole pool should be disinfected and disinfected after killing parasites. The most common disease of Chengyu is gill disease, and 20ppm formalin plus 1ppm animal furazolidone (with protozoa parasite), 1ppm bleach, 0.3-0.4ppm aquarium, 0 can be used according to the actual situation. .3-0.5ppm chlorine dioxide (ClO2) efficient water disinfectant control. If fulminant hemorrhage occurs, use 0.5ppm chlorine dioxide efficient water disinfectant to prevent and control, the effect is very good. In addition, every 10 days per acre per meter of water depth lime 10-15 kg of water Quanchiposa, adjust water quality, prevent diseases.
Six, timely harvest market. After 4 to 5 months of squid farming, commercial fish that have reached the market standard should be harvested. This will not only reduce the amount of fish in ponds, promote the growth of small shoals, but also avoid the growth of squid and reduce the value of commodities. Improve breeding efficiency. (Cai Wancheng)
First, choose a better pond. Pond area should not be too large, generally 5-10 acres can be, the water depth of 1.5-2 meters, less silt, into the drainage convenient, especially in the newly excavated pond is best.
Second, make preparations before stocking. Before stocking squid, clear the pond, excavate excess silt, and fully expose the bottom of the pool. About 20-30 days before the release of seedlings, release 6-8 cm. Mu with 75 kg of quicklime Quanchiposa, disinfection of the pond. Disinfection, irrigation 60-80 cm, culture water quality. Drainage is applied with a dense mesh filter to prevent wild fish and predators from entering the pond. After 5-7 days of disinfection, after the test of fish is released to prove that the toxicity of the drug in the pond has disappeared, the whole net is used to pull the net once, in order to carry out the killing of the enemy organisms in the pond, and 8-100 million of flowers are placed per acre. Feeding soymilk or rice bran to the squid before stocking, 15 days later, you can feed different sizes of squid depending on the specifications of the bait. General requirements of carp seedlings specifications to 5-7 cm long is good, acres put 1000-1200 tail; put 1-2 days before the pot seedlings replace the pool water, per acre with salt 5-7 kg of water Quanchiposa to clarify the pool of water . In front of the squid under the pond application of salt water or potassium permanganate and other drugs dip disinfection.
Third, the good food off. Keeping ponds with adequate and palatable bait fish is an important measure to promote the rapid growth of squid and reduce the feed coefficient. After carp ponds should be carefully observed feeding status of carp, and estimate the bait fish density. Such as the success of the pond, the original fish pond food can be fed for more than 10 days, so depending on the actual situation at any time ready to supplement the bait fish; bait fish specifications for its body length of 40% -60% of the body length of the carp The body height should be less than the caliber of the carp; the amount of each feeding should be enough for the squid to eat for 4 to 5 days. It should not be more or less, and sometimes not. In short, it is necessary to keep the pond bait fish dense enough to make it easier for the carp to prey. The feeding rate of squid is different under different water temperature conditions during different growth periods. Therefore, diligent observation and flexibility should be used for this purpose. When the bait fish is sufficient, a large amount of fresh manure floating on the surface of the pond can be observed. Before the sunrise or sunset, the bait fish cluster into the edge of the pool, and it is found that the bait fish are frequently chased by the squid. Before feeding the bait fish, choose 60-100ppm formalin, 8ppm copper sulfate, 20ppm potassium permanganate and other drugs to sterilize the baitfish for different sources of bait. The dipping time should be 10-30 minutes.
Fourth, keep the water in the pool fresh and have sufficient dissolved oxygen. The carp nature likes clear and fresh water quality. It has high requirements for dissolved oxygen in living water bodies and poor resistance to hypoxia. Therefore, every 31 days depending on water quality and weather changes, people should be injected with fresh, pollution-free river water. 10-20% of the amount of pond water is appropriate. It is better if the micro-flow state of the pool water can be maintained. In general, copper sulfate and ferrous sulfate mixture should be replaced after 3 to 5 days, and formalin should be changed after 8 to 12 hours to avoid the influence of residual drugs and dead algae on water quality. According to the changes in the weather, it is possible to flexibly grasp the time and number of times the aerator is turned on. When the weather is hot, it is found that the squid has spit out the bait fish phenomenon. It is necessary to start the aerator and infuse the new water in time to keep the water body full of dissolved oxygen.
Fifth, timely prevention and treatment of fish disease. Meal seedlings are susceptible to parasites during the seeding period, and the most harmful ones are: trichoderma, oblique worms, fish larvae, and anchor head lice. The prevention and treatment of fish gills and anchor heads can be controlled by 0.3-0.4ppm B extermination, 0.4ppm trichlorfon, and 0.08-0.1ppm potent extermination. The effect of 0.7ppm copper sulfate, ferrous sulfate mixture (5:2), 0.4-0.45ppm copper sulfate and potassium permanganate mixture (5:2) was selected for the trichomonads and the oblique worms. If the occurrence of pests is severe, the whole pool should be disinfected and disinfected after killing parasites. The most common disease of Chengyu is gill disease, and 20ppm formalin plus 1ppm animal furazolidone (with protozoa parasite), 1ppm bleach, 0.3-0.4ppm aquarium, 0 can be used according to the actual situation. .3-0.5ppm chlorine dioxide (ClO2) efficient water disinfectant control. If fulminant hemorrhage occurs, use 0.5ppm chlorine dioxide efficient water disinfectant to prevent and control, the effect is very good. In addition, every 10 days per acre per meter of water depth lime 10-15 kg of water Quanchiposa, adjust water quality, prevent diseases.
Six, timely harvest market. After 4 to 5 months of squid farming, commercial fish that have reached the market standard should be harvested. This will not only reduce the amount of fish in ponds, promote the growth of small shoals, but also avoid the growth of squid and reduce the value of commodities. Improve breeding efficiency. (Cai Wancheng)
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