At present, during the high-temperature season, the Yixing Aquatic Guidance Station of Jiangsu Province organized the city's fishery technicians to carry out on-site guidance and professional household concentration consultation in Tangkou. The main problems and solutions that now exist are summarized as follows: 1. During the hot season, there is little water or grass in the pond. How do you manage it? 2. At the same time planted plants, why do people grow better in their own pond? 3. At present, aquatic plants are floating and sinking. How to deal with it? 4. How to handle the moss in the pond? 5. What types of feed are currently feeding crabs? 6. What is the cause of the death of carp and how to prevent it? 7. How does the "scenty green shark" appear in the pond? 8. What about blizzards suffering from fulminant bleeding? 9. What is the current amount of salmon pellet feed? 10. At present, what feed should be fed to crabs? 11. How to manage the lack of oxygen in crab pools? 12. The water quality outside the river or outside is not good, how to change the water? 13. After the rainy season, how to manage water quality? 14. During the rainy season, what should be noticed in feed feeding?
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A: If the current pond water grass coverage is less than 60%, you can use some water peanuts instead, use wooden stakes and ropes to raise, and you can also tie it with a wooden stake or rope, and you must set it in a fixed enclosed area. Multiple piles of water peanuts were simultaneously transferred from the river fishes into the ponds in the area surrounded by water peanuts. When the water peanuts cover more than 60% of the current pond area and the blue planking exceeds 5%-10%, the excess can be removed manually.
A: The planting management of aquatic plants should start from the early stage. Prior to planting the plants, 100 kg to 150 kg/mu of fermented organic fertilizer was applied according to the fertility of the estuary. After winter stocking, keep the water level at 60 cm in December and January, and keep it warm and freeze-proof. Before and after mid-February, the water temperature is 8°C~10°C, and the water level is lowered to 30 cm (field plate or shoal area) in time. From February to April, it is maintained. Shallow water levels from 30 cm to 40 cm, and at the same time the water quality should be topped off by applying 100 kg/mu of organic fertilizer to promote and advance the formation of Elodea. The planting of aquatic plants must be accompanied by a variety of varieties, so as to prevent the death of aquatic plants of a single species of Elodea in the high temperature season, resulting in lack of plants in the ponds. Secondary planting can also be used: planting once in the winter and planting the plants with better growth from April to May into the no-grass area of ​​the crab pond.
Answer: The main reason is that the oxygen in the pond, especially the bottom of the pool, can be increased by using aerators and oxygen. During the high temperature season, the roots of water plants are rotted, causing floating and sinking, and water quality is corrupted. First, the floating plants should be cleared and the oxygen should be added. In order to prevent aquatic plants from floating up and down, one planted plant should be planted in the middle to late May to early June. After the plant grows, the water surface will be cut about 30 centimeters so that it can prevent summer dryness and rot. After mid-to-late May, the influent water can only be used a small number of times to prevent large amounts of water, causing the plants to rot after floating.
A: If it is a small amount, you can use mud and copper sulfate directly after mixing on the moss to be treated; the area is relatively concentrated can be used to manually fish processing; and pay close attention to: if there is moss rot into the bottom of the pool, we must use Granule oxygen. In a few days, use the appropriate amount of water improvement preparation (bottom grass improvement).
Answer: The plant-based feeds include corn, wheat, squash, hawthorn, soybeans, fava beans, water grass, and blue linden (among which corn, wheat, soybeans, and beans are boiled and mature well). At the same time, in the high temperature season, in order to reduce the residual bait pollution, feed the pellet feed once every two or three days (protein content 25%~28%). If there are rich professional fish, it is best to cast a small fish for 3 days to 5 days. , Usually should vote plant feed or pellet feed.
A: The cause of death is caused by poor water quality and high levels of nitrite in water. Prevention: Nitrite degrading agent can be used to adjust water quality at the same time. If the water quality of the outside world is good, the water should be changed in time; the water quality of the outside is poor, and the inner pond is used to recycle water while using oxygen aerators and granular oxygen.
Answer: In the windy weather, in the area where the stinky green shaha is relatively concentrated in the downwind, locally use copper sulfate (150 g/mu) to splash water or splash sodium dihydrogen phosphate appropriately, and pay attention to turning on the aerator or using oxygen. To prevent the lack of oxygen leads to flooding ponds; drainage methods can also be used, where the stinky green shaha is relatively concentrated in the downwind area and drained out of the pond by releasing water.
A: Chrysanthemum dioxide is sprayed on a sunny day in the fine weather. The amount of water used per cubic meter of water is 0.3g to 0.4g. Sprinkle for two consecutive days. Orally taking Fufuining or replica Nico, Enrofloxacin, etc. for more than 5 days. In order to prevent the eutrophication of the water and increase the oxygen in time, an aerator and a granular oxygen can be used. Prevention is also very important. In the prevention process, water quality is the key to ensure that the dissolved oxygen in the water is sufficient; appropriate amounts of vitamin C should be added to the feed.
A: The feed amount of squid pellet feed is 2.5% to 2.8% of the current fish weight. The feed was fed three times a day, and the artificial feeding time was controlled at 1 hour. When the feeding was mechanical, feeding was stopped when 80% of the total amount of fish was gone.
A: The main content of the particles is about 20% protein content, supplemented by plants, such as water grass, green peony, water peanuts and bran, pumpkin.
Answer: If the water quality is too fat or the water peanut is too dense and the bottom is prone to lack of oxygen, the amount of water should be increased. The amount of water should be changed every day by about 5 centimeters. When the transparency reaches 30 centimeters, the amount of water can be changed as little as possible; if the surface of the water peanut is too large, it will affect photosynthesis. , remove some of the water peanuts, the remaining part of the water accounted for 60% to 70%; particle oxygen mixed soil, stirring evenly, Quanchiposa. The best aerobic effect of the crab pool is to use air compression pump to increase oxygen.
A: Use your own pond to recycle water and use oxygen pumps to ensure the flow of water and ensure good water quality. In addition, you can set up a small cage in the water source, put a small amount of squid and shrimp as a test of the quality of rivers outside the water, when the cage fish and shrimp are normal, you can change the water.
A: After the rainy season, the pH of the water body changes, and it is acidic. The quick lime should be splashed in time to adjust its acidity. The dosage is from 8 kg to 10 kg/mu. The pond should be changed properly and the aerator must be strengthened. Used to improve water quality in a timely manner.
Answer: Due to a long period of rainy season, with less water in the water body, large changes in water quality, increased harmful substances, and low dissolved oxygen, enzyme preparations and vitamin C should be added at the same time as pellet feed, and should be used for a long period of time. The growth is favorable. The first is to increase the assisted digestion of exogenous enzymes and improve the utilization of feed. The second is to improve the disease resistance of aquatic products. At the same time, increase the feeding points accordingly to ensure timely feed utilization, low loss of wastage, high absorption and conversion rate, which is conducive to water quality management and the prevention of feed intake and disease prevention. (Yixing Fishery Station)