Located on the banks of the Bohai Sea and the Yellow River, Lan Chunlin, a large shrimp farmer in the Dalian Pulandian City, has cultivated more than 100 mu of shrimp annually since 1998, earning around 100,000 yuan. His main experience in raising shrimp production and efficiency is sixfold: 1. Grasping Silt away. For shrimp ponds that have raised shrimps for more than a year, the pool water has become shallow and toxic substances have increased due to the accumulation of bait and feces. Therefore, the shrimp pond must be cleaned with high standards and high quality before the release of shrimp seedlings. The dredging area should reach 100% to ensure that the water depth in the pool is more than 1.5 meters. Then use bleach to remove the wild. 2, grab fertilizer baits, timely investment seedlings. In late April, discharge water into the shrimp pond to reach a depth of 0.5 meters and 2.5 kg of urea per acre. The algae and rotifers in the pond are mass-produced so as to achieve the purpose of breeding basic feeds by fertilizer and water. Before and after May 20, the appropriate amount of seedlings will be cast, and 30,000 to 40,000 seedlings will be planted per mu, and disease-free and robust shrimp seedlings must be placed. 3, grasping the regulation of water quality. In the early stages of shrimp rearing, there are fewer water changes. When the transparency of the pool drops to 15 centimeters to 20 centimeters, it is necessary to change the water once, and change the amount of water to account for 1/2 of the amount of pool water. In the middle of development, change the water every 10 to 15 days and change the amount of water by 1/4 of the pool water. The method of changing the water is to drain the bottom water in the pool first, and then add new water. It is necessary to prevent the drainage of the surface. This water-fed mixed-water prawn will not be irrigated during the flood season with more rainfall, but will remove fresh water from the surface to ensure that the pool water is relatively stable. 4, grasping reasonable feeding. To make a self-made push net, 50 to 100 samples are taken at 5 o'clock in the morning and the stomach and growth of prawns are carefully observed. At the same time, the spin-net was used to determine the survival of the shrimp in the pool so as to achieve a reasonable and reasonable feeding. Feeding shrimp 6 times a day at the later stage of shrimp rearing and feeding once a day before and after sunrise, which accounts for 40% of the daily feeding amount and feeds once every 4 hours at night, which accounts for 60% of the daily feed amount. The daily feeding amount is 80% in the pool and 20% in the beach. However, when the water temperature in the pool exceeds 30°C, no feed is used. When there is little dissolved oxygen in the water, feed is not given. When the water quality deteriorates, feed is not given. When the atmospheric pressure is low, no feed is put in. When the water is injected into the fresh water, feed is not given for one hour. 5, to prevent floating head. We must adhere to regular observations, strengthen water quality monitoring, improve disease prevention and control techniques, and timely and accurately analyze water conditions, pool conditions, day conditions, and shrimp conditions so that early detection and early prevention can be achieved. When the shrimp and small fish were found to be on time, indicating that the lack of oxygen in the water was a precursor to the floating head of the shrimp. At this time, it is necessary to invigorate the water around the clock, and artificial waves, artificial oxygen generation, ice cooling, and oxygenation agents can also be used. Feeding can't feed when it's easy to anoxic in the middle of the night. It must not be found that the floating head stirred up the sediment, which only exacerbated the death of the shrimp. 6, catch shrimp shellfish, fish polyculture. Insisting on polyculture of shrimp and shellfish and polyculture of shrimp and fish not only greatly increase the pool area and feed utilization rate, but also reduce the cost of shrimp farming. It also contributes to the development and growth of shrimp, increases the yield of shrimp, prevents the death of prawn heads, and increases shrimp ponds. benefit.
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