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Soilless culture
Huanghua factory farming, change the traditional soil, outdoor quiet water aquaculture, no soil, indoor and outdoor flow aquaculture, easy management, high yield and good efficiency. Its production technical indicators are: 25 to 40 grams of seedlings 2 to 2.5 kg per 1 square meter, fed with full-price compound feed, and after 4 to 5 months of feeding, based on the current cost of raw materials, production The cost is 15 - 20 yuan / kg. The technical points are as follows: Select a place with clean water to build pools for indoor and outdoor use, with 2 to 20 square meters per pool, 0.5 meters deep in the pool, and the interior of the pool is lightened with cement. The tank is built to a width of 0.5 cm. Reservoir. The culture ponds are required to be able to drain freely, and aquatic plants are planted in the pond to cover 70% of the pool surface. Select high-quality seedlings to be placed at 2–2 kg/m2. Seedlings are best to choose artificial breeding seed, disinfected before the release of fish. Injuries and debilitated seed cannot be used. Feed the full-priced compound feed to the first domesticated fish before entering the pond, and then feed the compound feed. Before the finished feed is fed, it is prepared by adding 25% fresh fish paste into the finished feed to make a noodle-shaped bait with a diameter of 3-4mm. The amount fed was 1% of body weight of Astragalus - 2%. Astragalus has ingestion inertia. When it is used to a certain kind of bait, it should not be replaced. Otherwise it will seriously affect the growth of jaundice. Strengthen day-to-day management Keep flowing for 10 hours a day, and pay attention to sewage, rodents, and flood control ponds. Pay attention to the use of insecticides and sterilizers regularly in disease prevention and treatment pools to eliminate dead and diseased lice. If you use the wild jaundice seedlings, because the thornhead has a high rate of early beam, it should be dewormed before releasing the seedlings. You can choose to use the "Changlong I" or "Changsan III" drugs to repel insects.