First, pond selection and clearing Umbilicus (black fish) breeding pond should not be large, should be about an acre, the maximum not more than 2 acres, a small pond to facilitate the production and management, which is conducive to the production operation, the pool depth of 2 meters to 2.5 meters, to maintain a water depth of 1.5 meters ~ 2 meters, making the pool more than 0.5 meters above the surface of the water, the bottom of the pool is sandy, the bottom is flat, there is less silt, and the pond's inlet and outlet are set with solid anti-escape facilities. Adequate water sources, fresh water, no pollution, easy access to water and drainage, and separation into drains and drains to avoid the direct use of pooled water. In the 12 days to 15 days before the breeding, the dry ponds are disinfected, and 100 to 150 kg of lime are used per acre. They are presently used, evenly spilled, and there is no omission. Then they are exposed to sunlight for 5 days. After water injection, 1.5 meters are transplanted along the edge of the pool. 2.0 meters of weeds, such as water peanuts, for Umbrella (blackfish) to avoid, prey, inhabit and shade, adjust water quality. Second, fish species stocking The use of artificial breeding for breeding of black plover (black fish) is better, the fish should be disease-free without injury, strong physique, bright body, scales intact, normal activities freely, sensitive to the outside world. Specifications of about 18 cm, 2000 acre stocking, the same pool of fish to uniform specifications, avoid uneven size, fish ponds in front of the use of 3% salt water dip 5 minutes to 10 minutes. In order to control the water quality, it is possible to use species of white mullet, which has a stocking size of about 200 grams, with 180 to 200 tails per acre. Grass carp and squid have 50 to 80 tails per acre. Third, the bait feed Can feed fresh animal feed, or with pellet feed. When the supply of fresh animal food is sufficient, the use of wild fish, livestock scraps and other fresh animal feeds are the main factors. When feeding, attention should be paid to the freshness of the bait, avoid feeding the corrupted material, and follow the “Four Sets†vote. Feed the principle to ensure that black quail (black fish) eats well. Ecologically cultured black plover (blackfish) is generally better prepared with pelleted diets. The use of pellets is nutritionally comprehensive and has a relatively small degree of pollution to water bodies. Feeding should first adopt domestication technology, set a fixed food table in the pool, set the feed on the food table twice or three times a day, so that the fish form a regular fixed-point feeding habits, domestication is successful in about one week, daily feeding 2 The second time, from 9 a.m. to 10 a.m. and from 16:00 to 17:00 p.m., the daily feeding amount is generally 4% to 8% of the fish's body weight. The specific feeding amount depends on the season, the weather, and the feeding of black snakehead (blackfish). With flexible control of the activities, the particle size of the particles to be fed must be the same as that of the black wahoo (Blackfish), and the bait size should be adjusted at every other stage. IV. Water Quality Management Because of the small body of water and large stocking densities of black-fish (black-fish) culture, there are many excretions of residual baits and black tadpoles (black-fish), which can easily pollute water quality and affect the growth of black tadpoles (blackfish) or induce fish diseases. Therefore, water quality and water levels must be constantly adjusted. Change the water every 3 days to 5 days in the hot season, each time 10 cm to 15 cm, change the water every 7 days to 10 days in other seasons, each time 20 cm to 30 cm, water quality abnormal increase the amount of water, always keep the pool water 25 cm to 30 cm in transparency, regular use of EM bacteria to maintain the microecological balance of the pond, improve the water quality environment. Water plants play an important role in increasing dissolved oxygen and purifying water quality. In high temperature seasons, the area of ​​water plants is kept at 30% of the surface of the pond. After the weather turns cold, water plants are gradually removed to make them occupy about 10% of the area. When the water quality is too high and water is inconvenient, lime can be used to improve the water quality. Each 15 kg of water per acre can be sprayed evenly to increase the pH of the water body, improve the water environment, and meet the water quality requirements of black mullet (blackfish). V. Daily management Adhere to the morning and evening patrol, observe the growth, feeding, activities, and water quality of black plover (blackfish) and prevent fish escape and enemy invasion. Find out the abnormal situation, find the cause in time, and take corresponding measures. Strengthen the management of aquatic plants to prevent the spread of aquatic plants, timely remove rotted plants, prevent pollution of water quality, and timely prepare production records. VI. Disease Prevention The principle of prevention, prevention and control combined with prevention and prevention is applied. From the point of enhancing fish disease resistance, pathogens can be eliminated, the ecological environment can be improved, the incidence rate can be controlled, and the survival rate can be improved. Clean ponds should be strictly sterilized, and pathogens should be completely removed. High-quality fingerlings with healthy physique and good quality should be selected. Disinfect the ponds and keep them in a proper way. Adhere to scientific feeding, strengthen water quality management, and carefully manage operations to prevent damage to fish. Ecological disease prevention, with drug prevention, through the implementation of various comprehensive measures to reduce the chance of disease infection, reduce the incidence rate. Ginger Herbal Medicine,Ginger Food,Ginger Root,Ginger Powder Yirun Agricultural Cooperative , https://www.yiruncn.com