Jintan City, Jincheng town crab farming demonstration households Xiaolong in sets of 100 acres of crab breeding pool set of green shrimp, green shrimp efficiency of 50,000 yuan, since the production of hybrid crab production value of 120,000 yuan, the sale of finished crabs 250,000 yuan, per acre pure Income 2500-3000 yuan. Pond conditions Keep the pond silt 5 cm deep, deepen and widen the water level, make the pond water depth area of ​​1.5-2 meters account for more than 40% of the whole pond, pool slope ratio 1:3, use 100-150 kilograms of lime slurry for the whole pond Disinfection, set up calcium plastic plates around the pond or prevent escape to prevent crabs from escaping. Installation of Microporous Oxygen Installation The air supply pipe is installed in the middle of the pond, which is 10-25 cm above the maximum water level of the pool water. It runs through the pond from south to north. A micro-hole tube is installed at intervals of 8-10 meters on both sides of the gas supply tube. One end of the micro-hole tube is connected to the main gas supply tube, and the other end is extended to a distance of 1 meter away from the pool, and the micro-hole tube is fixed at a height above the bamboo pile. The bottom of the pool is 10-15 cm. Cultivation of aquaculture environment The whole pond is mainly planted with Elodea, cuttings and cuttings are used. Each plant uses 10-15 kilograms of grass and has a row spacing of 5-6 meters. It is planted with algae and bitters in the middle of Elodea. Grasses and other aquatic plants. The water pool coverage in the whole pool is maintained at around 50%. Before and after Ching Ming, 200-250 kg of live snails were released per acre. Water management The dissolved oxygen in the water body is maintained above 5 mg/l, the water clarity in the pool is 40 cm, the pH is around 7.5, and the ammonia nitrogen is below 0.1 mg/l. Water injection once every 5-7 days, 10-20 centimeters of water per day during hot season. The pond level is maintained at 0.5-0.6 meters in March-May, 1.2-1.5 meters in June-August, and stable at 1-1.2 meters in September-November. Seedlings are stocked with 1-2 months of stocking 1000-2000 tails per kilogram of 10 kg of young shrimp. In the March-April period, 600-200 kg/kg of Yangtze River water crabs were released. In areas where conditions permit, a second stocking of the young shrimps can be conducted after the spring shrimps are released for market (July-August), and 1,000-2,000 tails/kg of green seedlings are stocked for 5 kg per acre. Feeding management is mainly based on feeding pelleted feed, following the principle of more sunny days and less rainy days. From May to September, it is a period of rapid growth of crabs and shrimps. According to the conditions of the ponds, the oxygen levels increase. The normal weather is switched on for 4 hours per day and the hot weather is switched on for 7 hours. Disease prevention and control adhere to the principle of combining ecological regulation with scientific drug use, actively adopting technical measures such as disinfection of clear ponds, planting aquatic plants, breeding crabs, scientific feeding, and regulating water quality to prevent and control the occurrence of diseases. Every 10-15 days, the whole pool of photosynthetic bacteria, EM, and other microorganisms was splashed to improve the water quality, and the bottom of the crab pool was modified with the bio-bottom improver. Before the end of high-temperature rain Meiyu, the prevention and treatment of ciliate disease, and water disinfection and internal medicine baits, etc., At the same time, strengthen the feeding, enhance the crab body and disease resistance, to ensure that the crab smoothly through the fattening period. Fisheries listed for winter rotation will be caught in the cage in mid-April to capture the market. Crab fishing is generally from October to November, dry pond. Fei County Mingtao Electronic Co.,Ltd , https://www.yourbeautyassistant.com