Macrobrachium rosenbergii is a warm-water freshwater prawn, which is popular among consumers because of its large size and rapid growth. Now the price is relatively low, so to increase technology and increase output in order to achieve maximum profit, it is necessary to explore farming techniques here. I. Breeding conditions 1. Ponds: The area is suitable for 5 mu to 10 mu. The average water depth is 1.2m to 1.5m. The pond is rectangular and the east-west direction is good. The pond embankment is firm, and the leak-proof performance is good. The bottom of the pool is flat and muddy. 2. Ecological construction: The amount of bamboo shoots in the bottom of the pond is appropriate, and the coverage of the plants such as Vallisneria diminutus and Softleaf is about 20%. 3. Mechanical configuration: Each pond must be equipped with an aerator, with a power of 1.5 kilowatts/mu and equipped with a certain number of submersible pumps. 4. Shrimp and fingerlings: The shrimp seedlings are purchased from around 0.8 centimeters of seedlings and purchased at 16,000 acres per acre. 5. Water source and water quality: The water source is convenient and sufficient, the water quality is fresh, and it meets the living standard of Macrobrachium rosenbergii. 6. Qingchi and Feichi: 20 days before planting, use clear lime ponds, generally 80 kg of lime per acre to kill fish and enemy pests. Before the seedlings are released, the water is injected in the first half of the month, and the water is fertilized. Generally, pigs, cattle, and chicken manure are used to ferment plankton, and it is advisable to keep the tea green or oil green in the water. Second, juvenile shrimp cultivation to create a good living environment, is extremely beneficial to the growth of juvenile shrimp, but also to create the remaining time to start the city. 1. Facilities: In general, plastic greenhouses or earthen ponds are combined with cages. 2. Feed: Plankton in aquaculture ponds can meet their growth requirements. Soymilk and prawns are mixed in the late feed and become mushy. Quanchiposa. 3. Density: less than 13,000 tails/mu. 4. Daily work: Do the daily work such as number of shots, less investment in temperature control, aeration, and observation. Third, batch stocking, increase density 1. The first batch of stocking outdoor pool water temperature reached 20 °C above, the cultivation of good water quality, the first batch of seedlings after stocking treatment, the general density of 10,000 / acre. 2. The second batch of stocking time in mid-May, after 5 days to 7 days after the cultivation can be stocked. 3. The third batch of stocking can be arranged in mid-June. The water temperature is high quality and easy to survive. 4. Daily management With the increase of shrimps, the increase of water temperature, feed is mainly based on snail meat and shrimp pellets, supplemented with bean cake, pancake paste, barley flour, water grass, etc., and the daily feeding amount is 5%~ 8%, according to the weather, water temperature, water quality and bait situation flexible control, strengthen water quality management, mainly water injection. V. Open up the gap by listing 1. Capture large and small, increase the size of the net. Capture large and small and not damage the shrimp, and shrimp can grow up. 2. Listed on a quarterly basis, the first batch of listings can be based on time to determine the time, after which time the listing will be based on the size and size of the commercial shrimp. 3. Delay the clear pond time: extend the time to increase the specification, but it must end before the water temperature is 18°C. Sixth, tour ponds and disease prevention patrol ponds should look at the color of water, generally tea green or oil green is appropriate, mainly observe the shrimp growth, feeding, peeling activities. In low-pressure or rainy weather, vigilance causes death of shrimp floating head due to lack of oxygen, and when symptoms of diseased fish are found, timely measures should be taken to promptly treat it. As a matter of fact, breeding Macrobrachium rosenbergii is not a difficult task. As long as it is carefully implemented according to the above methods, it is possible to find a feasible way for increasing production and income of Macrobrachium rosenbergii.
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