With the gradual increase of temperature, the management of pond aquaculture is particularly important. With proper management, stable production and high output will not be empty talk; if it is not properly managed, production will not be guaranteed, and even then there is still the possibility of failure. Therefore, in the hot summer months, the management of Fish farming is required to be meticulous and in-depth, and scientific and technical measures are untiringly implemented.
First, pay attention to cool the southern climate is hot, the maximum surface temperature of the pond surface can exceed 35 °C, if you allow fish to grow for a long time under the exposure of the pond, then the breeding effect is certainly not ideal. Therefore, when breeding cold water or other fish that are afraid of high temperature, a shading shed or shading net (pay attention to ventilation) should be erected in time above the pond, or a water lotus should be placed in the pond to prevent direct sunlight from reaching the entire pool.
Second, feeding management As the saying goes: Fish grows three volts, pigs grow three autumn. In the summer, the fish have reached a stage of overeating. During this stage, every effort should be made to allow the fish to eat well. Especially when the water temperature is between 20°C and 28°C, the growth of the fish is the most vigorous and the feed efficiency is the highest. It is important to pay attention to the timing of the intensity feeding, but it should be noted that: 1. When the weather is fine, the dissolved oxygen in the water is high and the fish eat a large amount. , can be more appropriate vote; when the weather is hot, the dissolved oxygen in the water is low, fish feeding poor, residual bait is easy to spoilage, should vote less or not cast. 2. When the water quality is refreshing, the fish can eat well and can make more investment. When the water quality is not good, you should invest less or not.
Third, regulate the quality of water It is often said that raising a pond fish is to raise a pool of water, and pond water quality requirements are “fat, live, tender and coolâ€. In the high temperature stage, due to the large amount of feed, there are also many fish excretions, which can easily cause the deterioration of water quality and produce poisonous gases, resulting in lack of oxygen in the pool water and causing the occurrence of dead fish in flood ponds. Therefore, if there is a conditional change of water, proper old water should be discharged and new water should be injected in accordance with the color and transparency of the water body. For ponds with low pH, quicklime solution should be splashed with water to improve water quality. When fertilizing, inorganic fertilizers or microbial preparations should be used as much as possible, with little or no organic fertilizer.
4. Insist on the patrol pond The patrol pond work is an indispensable part of the process of fish farming in the pond. The patrol pond should be maintained at least three times a day, and the number of patrol ponds should be appropriately increased according to the situation to guard against emergencies. Pay special attention to the early morning sun, 2 o'clock in the afternoon, the dissolved oxygen content of the water body should be less oxygen to increase aerator, high temperature and rain should be constantly open aerator, in the evening should stop the boot, if there is a risk of floating head to promptly increase oxygen, Until the floating head disappears, new water or water aeration is added according to the conditions.
Fifth, comprehensive prevention and treatment of summer is the epidemic season of fish diseases, prone to bacterial diseases such as gill disease, enteritis, red skin, print diseases, and viral fish diseases such as bleeding. Prevention and treatment of fish diseases should be “prevention is the mainstay and treatment is the supplement, disease-free prevention, and disease early managementâ€. To keep fish ponds clean and fish ponds should be caught, fish should be fished out in time to prevent germs infection and water quality deterioration. Correct diagnosis, timely treatment, and intractable diseases should be promptly consulted with the aquatic technology department. .
6. It is advisable for the record keeping households to have one account per fish pond. Each fish pond has a fish diary (commonly known as “Tangkaâ€), and the stocking dates, mantissas, specifications, and weights for all kinds of fish species. Each harvest date, number of tails, specifications, weight, type and quantity of daily feeding, fertilization, and water quality management and fish disease prevention and control should be recorded in the corresponding form for summary and accumulation. Experience is used as a basis for future planning and improvement of fish farming techniques. In addition, during the main growing season of fish, the growth should be checked regularly (usually once a month) in order to understand the effect of fish farming and take corresponding measures in time to accelerate fish growth.
VII. Cautious fishing During the summer when catching fish, pay attention to several points: 1. Be careful when pulling the net to avoid mechanical damage and death. 2, timely control of water quality after catching, to avoid fish disease. 3, the arrest should be carried out in the morning and evening when the weather is cool, do not catch it when the weather is hot and the water temperature is high at noon.
Shunde District Agricultural Bureau of Foshan City
First, pay attention to cool the southern climate is hot, the maximum surface temperature of the pond surface can exceed 35 °C, if you allow fish to grow for a long time under the exposure of the pond, then the breeding effect is certainly not ideal. Therefore, when breeding cold water or other fish that are afraid of high temperature, a shading shed or shading net (pay attention to ventilation) should be erected in time above the pond, or a water lotus should be placed in the pond to prevent direct sunlight from reaching the entire pool.
Second, feeding management As the saying goes: Fish grows three volts, pigs grow three autumn. In the summer, the fish have reached a stage of overeating. During this stage, every effort should be made to allow the fish to eat well. Especially when the water temperature is between 20°C and 28°C, the growth of the fish is the most vigorous and the feed efficiency is the highest. It is important to pay attention to the timing of the intensity feeding, but it should be noted that: 1. When the weather is fine, the dissolved oxygen in the water is high and the fish eat a large amount. , can be more appropriate vote; when the weather is hot, the dissolved oxygen in the water is low, fish feeding poor, residual bait is easy to spoilage, should vote less or not cast. 2. When the water quality is refreshing, the fish can eat well and can make more investment. When the water quality is not good, you should invest less or not.
Third, regulate the quality of water It is often said that raising a pond fish is to raise a pool of water, and pond water quality requirements are “fat, live, tender and coolâ€. In the high temperature stage, due to the large amount of feed, there are also many fish excretions, which can easily cause the deterioration of water quality and produce poisonous gases, resulting in lack of oxygen in the pool water and causing the occurrence of dead fish in flood ponds. Therefore, if there is a conditional change of water, proper old water should be discharged and new water should be injected in accordance with the color and transparency of the water body. For ponds with low pH, quicklime solution should be splashed with water to improve water quality. When fertilizing, inorganic fertilizers or microbial preparations should be used as much as possible, with little or no organic fertilizer.
4. Insist on the patrol pond The patrol pond work is an indispensable part of the process of fish farming in the pond. The patrol pond should be maintained at least three times a day, and the number of patrol ponds should be appropriately increased according to the situation to guard against emergencies. Pay special attention to the early morning sun, 2 o'clock in the afternoon, the dissolved oxygen content of the water body should be less oxygen to increase aerator, high temperature and rain should be constantly open aerator, in the evening should stop the boot, if there is a risk of floating head to promptly increase oxygen, Until the floating head disappears, new water or water aeration is added according to the conditions.
Fifth, comprehensive prevention and treatment of summer is the epidemic season of fish diseases, prone to bacterial diseases such as gill disease, enteritis, red skin, print diseases, and viral fish diseases such as bleeding. Prevention and treatment of fish diseases should be “prevention is the mainstay and treatment is the supplement, disease-free prevention, and disease early managementâ€. To keep fish ponds clean and fish ponds should be caught, fish should be fished out in time to prevent germs infection and water quality deterioration. Correct diagnosis, timely treatment, and intractable diseases should be promptly consulted with the aquatic technology department. .
6. It is advisable for the record keeping households to have one account per fish pond. Each fish pond has a fish diary (commonly known as “Tangkaâ€), and the stocking dates, mantissas, specifications, and weights for all kinds of fish species. Each harvest date, number of tails, specifications, weight, type and quantity of daily feeding, fertilization, and water quality management and fish disease prevention and control should be recorded in the corresponding form for summary and accumulation. Experience is used as a basis for future planning and improvement of fish farming techniques. In addition, during the main growing season of fish, the growth should be checked regularly (usually once a month) in order to understand the effect of fish farming and take corresponding measures in time to accelerate fish growth.
VII. Cautious fishing During the summer when catching fish, pay attention to several points: 1. Be careful when pulling the net to avoid mechanical damage and death. 2, timely control of water quality after catching, to avoid fish disease. 3, the arrest should be carried out in the morning and evening when the weather is cool, do not catch it when the weather is hot and the water temperature is high at noon.
Shunde District Agricultural Bureau of Foshan City
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