The long-kissed birds, commonly known as the river group, the fertilized fish, the sea bream, and the ichthyosaur fish, are attached to the genus Odontomorpha, Acipenseridae, and Genus. It is a large-scale economic fish. Because its kiss is longer than other fish, it is said to be long. kiss?. In recent years, natural resources for long-kissing animals have been declining, the market price is high, and the breeding prospects are good. Now the pond-culture techniques for long-kissing ponds are described as follows:
First, the conditions and preparation of the fish pond into a fish pond area of ​​5-10 acres is appropriate, the water depth of 1.8-2.5 meters, rectangular, east-west direction, water sources and pollution-free, fresh water, rich dissolved oxygen, pH value of 7.0-8.2, pool bottom Silt is less and generally about 10cm, the pond is convenient for drainage. One week before stocking, clear the pond thoroughly with quicklime to kill pathogens and predator organisms. The amount of quick lime in dry clear ponds is 75kg/mu, and the amount of quick lime in clear ponds is 150kg/mu.
Second, the fish stocking stocking specifications for the tail weight 50-100g long-knot fish species 600-1000 tail / acre, while the nesting specifications for the tail weight of about 100g of the flower white peony about 150 / acre in order to make full use of the water rich Plankton resources and some residual bait debris can be used to increase both fish production and water quality. Restocking time is appropriate from mid-February to early-March, and stocking requirements are from the long-kissed species, the original improved-breeding farm, the fish body without injuries, the specifications are consistent, the body fat is healthy, the color is bright, and the activities are normal. Fish were disinfected with a 4% physiological saline solution for 10-15 minutes before the fingerlings entered the pond.
Third, the amount of protein required for adult diets for adult diets is about 40%. It can be prepared with high-quality fishmeal, soybean meal, wheat, corn, yeast, minerals, and other raw materials. If artificial adult feed is used for adult breeding, Long kisses also have a good growth effect. Feeding should follow the principles of "four lookes" and "four sets". "Four lookes" means seeing the season, watching the weather, watching the water quality, and looking at the actual feeding and activities of the fish to grasp the daily feeding amount. "Four "Confirmation" refers to the feeding of constant quality, quantitative, positioning, and timed feeding. The amount of each feeding is based on the principle that the fish is just finished eating about 2 hours after feeding. In the main growing season of fish, feeding 2 times a day, long-swinging, and feeding at night are relatively large, so the amount of feeding in the afternoon should account for about 60% of the total feeding amount in order to make the fish grow smoothly and quickly.
Fourth, daily management
1. Control water quality and keep the water fresh. For long-sweat, light-sensitive, so crystal clear pool water is not good for keeping long kisses, usually requiring the pool water to be light oil green, water transparency 25-40cm is appropriate. When the transparency of the pool water is too large, the fermented organic fertilizer shall be applied in an appropriate amount; if the transparency of the pool water is too small, new water shall be replaced in time.
2, to prevent long-swimming floating head, especially in hot, hot weather, should maintain the dissolved oxygen content of the pool water in the 5mg / L or more, when the dissolved oxygen content dropped to 2.6mg / L or less, the fish will appear floating head phenomenon, such as pool water When the dissolved oxygen dropped below 1.2mg/L, a total fish fatality occurred. To ensure that the dissolved oxygen content of the pool water is relatively high, flushing water should be taken in due course, aerators should be turned on, and photosynthetic bacteria or EM bacteria should be put into action.
3, commonly used lime to adjust water quality. Breeding long-swimming? Suitable pH value of the pool water is 7.0-8.2, the pH value can't be changed drastically, so it's not suitable for sprinkling quicklime in large doses. Each dosage is 15-20kg/mu, and it is generally applied every 20 days. This can not only regulate water quality, but also effectively prevent the occurrence of fish diseases.
4, do a good job in the pool, in the main long-season growth season to adhere to the three-day patrol pool system, observe the fish at dawn, whether the floating head, combined with sun washing feed table before the afternoon to check the fish feeding and activity, the evening combination Observe changes in water quality and whether there are signs of floating heads. Summer or the sudden change of weather, thunderstorms should also be added before and after the night tour pool 1-2 times, and there is a dedicated person on duty.
V. Prevention and treatment of diseases should be done in time to prevent fish diseases. Long-snapping? There are not many diseases during adult culture. Common diseases such as rotting, enteritis, and anchor heads should be done. Early disease, prevention, prevention, prevention and treatment."
1. The main measures for prevention work are to thoroughly fish ponds and clear fish ponds before the stocking of fish species, and to lay stocks of high quality fishes that are strong and free of injuries, in accordance with the scientific “four views†and “ The method of "determining" is used for feeding without feeding deteriorating feeds, and quicklime and chlorine-containing preparations are regularly used for disinfection. In the event of a fish disease, early detection, early diagnosis, and early treatment are required, and the use of drugs should be consistent with the guidelines for the use of fishery drugs. When using drugs, insist on accurately calculating the amount of water and the amount of medication, do not just increase the amount of medication, and pay attention to a good drug withdrawal period.
2, the treatment of long kiss? The rotten gills, enteritis, skin and other bacterial diseases can be used Chloride preparations continuous Quanchiposa 2-3 times, the amount required to use the instructions to be treated. Intestinal disease can be evenly mixed with garlic and mixed with baits and taken at the same time, each serving for 5-6 days; the parasites such as antler heads and oysters can be splashed with 0.5ppm crystal trichlorfon Quanchiposa and splashed once every other week. Because of the long kiss, the amount of drugs used is usually less than that of domestic fish, so after careful treatment of insecticides, observe carefully. If you find that the fish is in disorder, you need to add new water immediately.
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It is strongly related to similar shrubs, such as those that produce cranberries and huckleberries.
Blueberries are small, around 5-16 millimeters (0.2-0.6 inches) in diameter, and have a flared crown at the end.
They are green in color at first, then change to blue-purple as they ripen.
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