Generally, planting takes about 25 days, fry can grow to 3 cm, and fish can also be raised in the pond. 2. The area of fingerling plantation is 1 ~ 3 mu, and the water depth is 1.0 ~ 1.2 m. Before entering the pond, the soup should be thoroughly cleaned and disinfected, and 300 kg of rotten radish should be fertilized. The stocking density ranges from 8000 to 1 000 per mu. The pond is equipped with a feed table, fish meal (or minced fish), soybean meal, corn flour, wheat bran, etc. They are all fed on time, mixed with flour, kneaded into a ball and fed with water, and the crude protein content needs to be above 32%. Tame the artificial bait within 2 days after the fry enter the pond, and use the fixed bait signal to conduct fixed-point and fixed-time bait training during domestication. After two months of cultivation, the average body length reached 10 cm, the average body weight reached 10g/ tail, and the largest individual reached 20 g. Main culture pond conditions: sufficient water, good water quality, convenient drainage, quiet environment, area 1 ~ 3 mu, water depth 1.5 ~ 2 meters. Generally, it is stocked in March-April every year, and the pond should be cleaned and disinfected before stocking. After the toxicity disappears, add 0.8 ~ 1 m water and organic fertilizer to breed natural bait organisms to feed catfish.
(2) Fish stocking: When stocking catfish, the reasonable stocking density should be determined according to pond conditions and aquaculture level. When stocking, 2,500 ~ 3,000 and 10g/ tail are generally stocked inside and outside radish, and the water quality is adjusted with 15 ~ 20cm 150 American mackerel species. Or 1500 ~ 2000 flowering fish released in the summer of that year. In addition, when Monopterus albus grew to more than 7 cm, 200 summer flowers were raised by silver carp in Wudang. When stocking fish, soak in 3% ~ 5% normal saline 10 ~ 15 minutes. Moreover, catfish species are put in first, and other species are released after 10 ~ 15 days, which is beneficial to the growth of fish culture. (3) Feed management technology. Artificial culture of yellow croaker can be domesticated by vivid animal bait or artificial feed. Mechanical omnivore, the protein content required in the early stage of feed is above 34%, and the fat is 4%; Protein content is 30% and fat content is 6% in the later stage. The feeding process of Pelteobagrus fulvidraco should be divided into three stages. The first stage is 4 times a day in May and June, and the daily feed rate is 3% ~ 5%. The second stage, three times a day in July, August and September, the bait rate is 2% ~ 3%; In the third stage, twice a day after 10, the bait rate was 2%.
On this basis, the amount of bait is adjusted according to the weather and water quality, and it is suggested to adopt the predation method in the first, third and second stages, that is, 90% of the fish boarding the bait platform stop eating after leaving the platform. In the second stage, the weather is hot and the water quality is easy to fluctuate. It is best to stop surrendering after 80% of the fish on the bait platform leave. Under the condition of artificial culture, the water temperature has obvious influence on the food intake of Pelteobagrus fulvidraco. When maintaining small waters or aquaculture facilities, the water temperature is controlled at 25 ~ 28 by manual control, so that catfish can maintain the fastest growth speed and achieve the greatest economic benefits in the shortest time. Water quality management. In the whole production process, the water quality should be kept fresh and the dissolved oxygen should be sufficient. If any abnormality is found, measures should be taken in time, such as injecting new water, changing water, applying water quality improvers such as "water discharge report" or "quick removal of black matrix". Daily management. Patrol the pond every day, pay attention to the water color, water level change and whether the drain is completely blocked. Catfish is put in the pond. Without adding bait, the output of Wudang catfish can be increased by 10 ~ 20kg, and the profit of radish can be increased by 200 ~ 400 yuan, with obvious economic benefits.
(1) Pond conditions: Catfish should be raised in ponds with good water source conditions, an area of 5- 10 mu, a water depth of 1.5-2.0 m, and rich natural bait resources (plankton, anacondas, shrimp and aquatic insects). (2) Stocking density: The density of catfish cultured in ponds mainly depends on the biomass of bait in ponds. Generally speaking, there were 100 ~ 150 catfish or 300 ~ 500 3 cm fry in Tang Miao in that year, if the variety and collocation rate of Zhu Yang did not change the original breeding method. The catfish pond is silver, mainly grass carp, and cannot be mixed with carp and crucian carp, nor with ferocious carnivorous fish such as crows and mackerel. (3) Daily management: In addition to routine operation, the daily management of the catfish pond focuses on managing the water quality and keeping the dissolved oxygen above 4 mg/L, especially in the high temperature period from July to September. Generally, water is added once every 2 ~ 3 days, and 5 ~ 10 cm is added each time. Catfish raised by lasso will hardly get sick, mainly because of the anchor head that appears in fish farming. Catfish is put in the pond. Without adding bait, the output of Wudang catfish can be increased by 10 ~ 20kg, and the profit of radish can be increased by 200 ~ 400 yuan, with obvious economic benefits.