Pond conditions: Use concrete and earthen ponds. Generally, each area is 10-20 square meters and the pool depth is 0.7-1.0 meters. The bottom of the pool is covered with 20-30 cm of mud, and some stones, bricks, tree roots, etc. are provided to provide conditions for the locusts.
Seedling selection: The key to success in raising astragalus is to increase the survival rate of seedlings. At present, the artificial breeding technology of squid in China has not yet passed, it is difficult to buy a large number of seedlings from the farm, and more to capture from the natural world. When choosing a quail species, it is necessary to pay attention to the selection of a species that grows fast. Dark yellow and large yellow spots are generally better. The former has a slender body and a round body. The body surface has a dark yellow color with large brown markings. The latter has a light yellow body and a relatively thin brown markings on the body. The general survival rate is grayish blue and green. The second is to choose a physically fit, non-injured, and disease-free person.
Stocking: Disinfection with 0.15 kg of clear lime in each square meter of water before stocking, release water after 2-3 days, and release seedlings after 5 days. The seedling size of the same pond should not be much different. Generally about 20 grams per tail, put 80-100 tails per square meter, put 50 tails per square meter above 100 grams. In order to keep the water fresh, 3 to 5 fishtails are stocked. Seedlings are sterilized with 3%-4% saline or 8 parts per million potassium permanganate solution when seedlings are in the pond.
Feeding and management: When Huang Qigang enters the pool, the water level is maintained at 30-40 cm deep. As the temperature rises and the fish grows, he gradually deepens the water level. In summer, the water level remains above 0.7 meters. In order to keep the water fresh, change the water regularly. When the water temperature is lower than 25°C, change the water every 1/3-1/2 every 5-7 days. When the water temperature is higher than 25°C, change the water every 1-2 days 1/3- 1/2. In general, freshly introduced Astragalus can be fed or fed in small quantities, and the pond can be fed after 3-4 days. Fish and shrimp can be thrown and the ponds begin to feed after 3-4 days. Can be voted fish and shrimp, artificial feed can also be fed. Feeding must be strictly "time, positioning, quantitative, qualitative": that is fed 2-3 times a day; to set 2-3 food in the pool; depending on the water temperature and quantitative feed; feed must be fed fresh.
Disease prevention: regularly disinfect the fish ponds, and every half month of lime (25 grams per cubic meter of water) dissolves and is splashed in the whole pool. And timely remove residual bait, change the water, keep the water fresh.
Fishing: In October-November, when the water temperature drops below 10°C, the yellow pips will stop feeding into the wintering period. At this point can be filled with water for winter, but also after the dry pond fishing listed.
Astragalus Breeding Technology
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