The key technology of polyculture of barracuda species
I. Preparation 1. 25 kg of tea cake or 75 kg of lime for each mu of water; bleaching powder, 20 g per cubic meter, and soaking in Quanchiposa. 2, before the water must be applied to the base fertilizer, usually per acre Fermented manure or mixed compost 250-500 kg, it is best sprinkled on the bottom of the pool and the fertilizer stirred in the pool mud. 3. The inside of the pool bowl is surrounded by thick film, asbestos tiles, or external polyethylene net. The inner membrane is surrounded by thick film. It is 10-15 cm into the mud, 60 cm above the surface of the bowl, every 0.5-1. Meters have 1 stake support. Second, seed stocking The seedlings placed must be physically robust, uniform in size, and free from disease and injury. The average size is 3,500/kg. There are 560 fish species per acre; 740 crabs per acre are sold, and specifications are 160-200 per kilogram. Third, daily management 1, top dressing. Generally, 13 kg of phosphate fertilizer and 15 kg of sulfate fertilizer are applied per acre, and once every half a month, the high temperature season is suspended. 2. Strengthen anti-escape. Adhere to the early, middle and evening patrol ponds, regularly inspect and maintain and reinforce anti-escape facilities, especially during thunderstorms and typhoon seasons. Intensify inspections to find crabs in time. 3, anti-pan-tang. Due to the high-density farming of fish ponds, the occurrence of oxygen deprivation occurs frequently in fishes, especially in the hot and humid seasons. Therefore, ponds should be frequently patrolled in the breeding process. If floating heads are found, they should be filled with water or oxygen aerators in time, or they can be divided in time to reduce the breeding density. Fourth, timely arrest sale According to the existing stocking amount, the second-instar fish species can grow to 450-550 grams after 150-200 days of growth, reaching the market specifications. The large-density cultured barracuda species can stock more than 40,000 hectares per hectare and can grow to about 150 grams in that year, and will be available for sale in the second year. Non Elastic Sport Tape,Adhesive Sport Tape,Multi Color Sport Tape,Sports Tape Bandage RFX+CARE Manufacturing Co.,Ltd. , https://www.rk-rfxcare.com