Raising astragalus in ponds for raising commercial fish can produce 300 kilograms of fish per acre and 30 kilograms of astragalus mongolicus. The income of astragalus is only a thousand dollars, and the aquaculture efficiency can be doubled.
Pond conditions. The pond covers an area of ​​about 10 mu with an average water depth of 1.2 meters. The pond is wide and strong without leakage. There are a large number of plants around the pond, dry grass, no grass can be transplanted water peanuts, accounting for about 30% of the total area of ​​the pool, in order to facilitate the habitat of the yellow pelican. The water source is non-polluting, the water injection and drainage are convenient, and the water injection and drainage outlets are set to prevent escape.
Clear pond fertilization. Lime clear pond. Depth 1 meter per mu with lime 150 kilograms, Quanhua Quanchiposa. Such effects disappeared, and 1,000 kg of manure was applied per mu. After 7 days, plankton bloomed in large numbers, and fish species could be stocked.
Seed stocking
1, fish stocking. It is generally conducted in late February. It mainly uses fertilizer fish, and 400 fishes per acre are stocked, 50% of which are whitefish, 20% are flowers, 15% are head lice, and 15% are silver oysters. Average specifications For every 10 kilograms. The silver carp is bigger in size, and the tail weight is 200 grams. It is better to breed fish for feeding. The fingerlings were soaked in 3% saline for 10 minutes and placed in the pond.
2, the kind of delivery. In the peak activity season of Astragalus, we collected disease-free, lively and lively cage-catching species. Before the stocking, they were soaked in 3% saline for 5 minutes to remove the rogue and stir. The stocking specification per acre is 30 kilograms of 30 kilograms per kilogram, and the amount of 15 kilograms per kilogram will be sufficient at one time. Note that the specifications are relatively uniform.
3, feed fish stocking. Appropriate feeding of ear fish and loach, generally 20 kg per mu. They breed quickly, are small in size, and are susceptible to predation. Mud grows and sells with certain income.
Daily management
1, fertilize. After the regular application of phosphate fertilizer and nitrogen fertilization water quality in June, the first day of the morning apply 5 kg of calcium phosphate per acre, the next morning, apply 2.5 kg of urea per acre, fertilize the water Quanchiposa, fertilize once every 10-15 days.
2, feeding. Cast some feed to feed fish. The feed mainly includes pancake, corn, bran, etc. The fish meal, vitamin additives, etc. are properly added to feed into pellets. The daily feeding amount was 3%-5% of the total weight of the fish fed and was fed twice a day.
3, adjust the water quality. The fish was found to have an oxygen-depleted floating head and oxygenation equipment was turned on in a timely manner to increase oxygen. In summer and autumn, fresh water is added once a week to ensure that water quality is “fat, live, tender and coolâ€.
4, prevent disease. From June onwards, disinfection of the pool water is conducted every 20 days. Every time, 20 kg of lime or 1 kg of bleaching powder are used per acre. Prepare baits regularly for feeding.
5, adult fish fishing. Lots of large-scale adult fish are listed in batches in batches to maintain proper breeding density. Insist on pulling nets and screen fishing with big eyes, and try to avoid fishing in the ponds throughout the year to prevent the yellow crickets from getting hurt. According to the market conditions for the harvesting of Astragalus, it is generally required that more than 150 grams of Astragalus membranaceus be captured and listed for catching large fish and catching fish. The fishing methods include trapping nets and trapping cages.
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