In order to increase the varieties of freshwater fish culture, drive the development of rural economy and increase the income of farmers, we have explored the technology of desalinated aquaculture, which will now be introduced as follows: First, seedling selection Choose high quality, healthy, non-injury, consistent specifications of the United States red fish, red seedlings, black quail seedlings, body length 6-7cm. Second, stocking 1, Clear pond disinfection water into the water before exposure to dry for two days, per acre with 100kg quicklime improved substrate, water 30cm, soak the pond for 3 days after draining; in the water 30cm, with bleach 20mg / L Quanchiposa Alcohol; two days later with 5kg per acre tea pot harm; 5 days after the water into fattening, the proportion of No. 1 pool was adjusted to 1.008, No. 2 pool of water was adjusted to 1.013. The photosynthetic bacteria 10 mg/L was splashed seven days before the seedlings were released. 2. After the domesticated seedlings were treated with copper sulfate 10mg/L and bromochloroheine 4mg/L mixture for 5 minutes, the American redfish, red bream, and black pod seedlings were put into the domestication pool for temporary depreciation. Pool water temperature is controlled at 23-24 °C, pH value is 8.2, the proportion of pool water is 1.018, and the pool water is stabilized for three days after being put into the fry. In the case of keeping warm, we inject a certain amount of fresh water every day, adjust the proportion of the pool water, raise the American redfish pond water, gradually adjust the proportion of seawater to 1.013, and then transfer the American redfish into the No. 1 pool and place the red snapper. , Black Stork transferred into the second pool. After 3 days of stabilization, 5% or so of fresh water is gradually added each day to adapt to natural temperature and low salinity. After 10 days, the proportion of No. 1 pond water for redfish stocking is adjusted to 1.003. After 15 days, the red flute will be stocked. For example, the specific gravity of No. 2 pond water in the black earthworm is adjusted to 1.009-1.010, the pH in the stable No. 2 pond water is between 7.8-8.4, the stocking density of the Yumiao No. 1 pond is 1000, and the stocking density of the No. 1 pond is 800. Third, develop management Feeding management The main feed is mainly fresh small fish, which has a wide source and low price. In the earlier period, due to the transport of fish, domesticated freshwater, and weak constitution, it was necessary to feed enough feed so that the fish could return to the rapid growth period as soon as possible. In the middle period of July-September, we need to control the amount of feed, because at this time, during the high temperature season, although the fish is eating well, if the fish is over-fed, it will easily cause diseases such as enteritis, and excessive feeding will cause deterioration and deterioration of water quality. . Feeding enough feed in the later period, because this time is the main fattening period of the fish, it is necessary to properly add enough feed, and the feed quality can be relatively poor, but keep it fresh. If the feed is insufficient, it will affect the growth of fish, especially American red jade. Feeding was conducted twice a day, once before sunrise and once after sunset, in 10%, 6%, and 7% feeding methods in three phases, and 7-80% satiation on a daily basis. When feeding, pay attention to the size and growth of the fish, adjust the amount of feed in time to increase the amount of feed, and observe the fish disease condition to prevent and control the fish. 2. Water quality control The pH should be controlled between 7.8 and 8.4. The water should be replaced every 5 days for 5-8cm. The water quality during the mid-term high temperature period is prone to deterioration. The water change is 8-10cm every two days depending on the circumstances. However, attention should be paid to the proportion of stable pool water, and zeolite powder should be used later to regulate water quality. 3, prevention and treatment of fish diseases to prevent the main. Supplemented by treatment, the main comprehensive prevention work. Concentration of 01%-0.2% of doxycycline in the bait is repeated for two consecutive days every two weeks to enhance the disease resistance of the fish. Sprinkle photosynthetic bacteria regularly in the pool water. To stabilize the beneficial bacteria, inhibit the growth of the bacteria, less incidence. Fourth, the experimental results After a total of 7 months of cultivation in April-November, No. 1 pond produced a total of 3006kg of redfish, 835kg per mu; the individual specifications reached 700-900g, the largest individual was 11123g, and the survival rate was 94%; the No. 2 pool received a total of red snappers. 1785kg black sorghum, 495.8kg per mu, individual specifications of 600-800g, survival rate of 90%, survival rate of 90%, the survival rate was significantly higher than the cage culture and general pond culture 40-70%, throughout the breeding process Water quality is relatively easy to control, there is basically no disease, fish growth is rapid, economic benefits are significant, and it is worth promoting the aquaculture production. Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptidenootropic.com