Tanggu shrimp polyculture is a new technology that utilizes shrimp ponds to raise oysters without affecting shrimp production. It not only improves the utilization rate of ponds and the quality of commercial shrimps and clams, but also greatly improves the economic benefits of pond culture. However, the following key measures must be mastered during implementation.
First, the pond facilities are very important The area of ​​ponds mixed with shrimps is preferably between 5 and 6 acres. This will not only be easy to manage but also catch. Pool depth 1.2-1.5 meters, water depth 0.8-1 meters. The slope of the pond is 1:3, and the pool is firm. In order to prevent escaping from the escape, you can use iron sheets or concrete tiles to prevent escape. When the fortification escapes the wall, it is required to bury 20 centimeters underground and 30 centimeters above the ground. There are a few cement tiles in the north side of the pool block, which is used as a feed platform. When it is set, it is half way to the water and half to the water. The pond requires easy injection and drainage, and the aquaculture water source should meet the national fishery water standards.
Second, the stocking work to do a good job (A) pre-stocking preparation 1, clear pond disinfection In addition to new ponds, the old ponds must be completely drained pool water and clear more than 15 cm of mud, and then use quicklime 100 kg dry method clearing per acre Tang disinfection. Clear water is injected 80 centimeters after 3 days; when the water is injected, the 80 mesh screen is used to filter the water, so as to prevent the enemy from entering the shrimp pond. 2. In order to supply the snails to supplement their biological feed, 100-150 kilograms of fresh snails should be allowed to grow before they are stocked. (II) Stocking and stocking 1. The stocking size and density stocking density shall be determined according to the cultivation method in the year. Therefore, the stock size for stocking shall not be less than 150 g. This will enable the company to develop 0.5 kg or so high-quality merchandise for sale in autumn. Stocking density is 200 per mu. 2. Stocking time and method of stocking time East China and Central China are generally from mid-May to early June, and southern China is in early May. The water temperature of the pond at the time of stocking is required to be above 25°C and the weather is fine. The species of stocking requires uniform specifications, and no disease or injury. Before stocking, the carcass can be soaked in 4% saline for 10 minutes. (C) The species of shrimp that are stocked and stocked is preferably locally grown and self-fertilized. The size of the shrimp species requires 1.5 cm or more and the stocking quantity is 60,000 mu. Restocking time in early July, shrimp species can be increased to 1 meter after pooling.
Third, the daily management should be serious 1, feeding bait shrimp feed according to conventional feeding commodity shrimp material. After stocking, you can start some live bait such as small trash fish and pig liver. After one month, you can gradually stop feeding. Afterwards, the sick and weak shrimps and breeding snails in the pool are used as baits, and no compound feed is required. 2. Water quality management Lime is properly applied during the breeding period so that the pH of the pool water is maintained between 7 and 7.5. Appropriate exchange of new water, changing the amount of water is generally 1/5 of the original pool of water. 3. The daily patrol ponds The patrol ponds are mainly used to observe the activities of shrimps and cockroaches in the pool, the conditions of the barriers at the inlet and outlet, the changes in the water quality and the situation of the enemy’s activities. The patrol pond should make records and discover problems and deal with them in time.
Fourth, timely fishing and shrimp fishing can be based on market conditions and growth specifications to take a combination of catch and centralized fishing. The clams have to wait until the dry pool is caught at the end of the harvest. Due to the relatively concentrated catching of crickets, if they can not be sold off once, they can be raised temporarily, and 25 centimeters thick moist sand can be laid on the idle floor of the home or warehouse, and the pupa can be buried in the sand. Usually at room temperature about 15 °C, can save more than 30 days. During the period, it can be gradually listed and sold according to the market conditions at that time. In addition to the cultivated method of the year, the polyculture of shrimp and prawn also includes two-year cultivation methods of small quail species and shrimps, three-year cultivation methods of seedlings and shrimps, etc., and local production can be performed according to local specific conditions and market conditions.
First, the pond facilities are very important The area of ​​ponds mixed with shrimps is preferably between 5 and 6 acres. This will not only be easy to manage but also catch. Pool depth 1.2-1.5 meters, water depth 0.8-1 meters. The slope of the pond is 1:3, and the pool is firm. In order to prevent escaping from the escape, you can use iron sheets or concrete tiles to prevent escape. When the fortification escapes the wall, it is required to bury 20 centimeters underground and 30 centimeters above the ground. There are a few cement tiles in the north side of the pool block, which is used as a feed platform. When it is set, it is half way to the water and half to the water. The pond requires easy injection and drainage, and the aquaculture water source should meet the national fishery water standards.
Second, the stocking work to do a good job (A) pre-stocking preparation 1, clear pond disinfection In addition to new ponds, the old ponds must be completely drained pool water and clear more than 15 cm of mud, and then use quicklime 100 kg dry method clearing per acre Tang disinfection. Clear water is injected 80 centimeters after 3 days; when the water is injected, the 80 mesh screen is used to filter the water, so as to prevent the enemy from entering the shrimp pond. 2. In order to supply the snails to supplement their biological feed, 100-150 kilograms of fresh snails should be allowed to grow before they are stocked. (II) Stocking and stocking 1. The stocking size and density stocking density shall be determined according to the cultivation method in the year. Therefore, the stock size for stocking shall not be less than 150 g. This will enable the company to develop 0.5 kg or so high-quality merchandise for sale in autumn. Stocking density is 200 per mu. 2. Stocking time and method of stocking time East China and Central China are generally from mid-May to early June, and southern China is in early May. The water temperature of the pond at the time of stocking is required to be above 25°C and the weather is fine. The species of stocking requires uniform specifications, and no disease or injury. Before stocking, the carcass can be soaked in 4% saline for 10 minutes. (C) The species of shrimp that are stocked and stocked is preferably locally grown and self-fertilized. The size of the shrimp species requires 1.5 cm or more and the stocking quantity is 60,000 mu. Restocking time in early July, shrimp species can be increased to 1 meter after pooling.
Third, the daily management should be serious 1, feeding bait shrimp feed according to conventional feeding commodity shrimp material. After stocking, you can start some live bait such as small trash fish and pig liver. After one month, you can gradually stop feeding. Afterwards, the sick and weak shrimps and breeding snails in the pool are used as baits, and no compound feed is required. 2. Water quality management Lime is properly applied during the breeding period so that the pH of the pool water is maintained between 7 and 7.5. Appropriate exchange of new water, changing the amount of water is generally 1/5 of the original pool of water. 3. The daily patrol ponds The patrol ponds are mainly used to observe the activities of shrimps and cockroaches in the pool, the conditions of the barriers at the inlet and outlet, the changes in the water quality and the situation of the enemy’s activities. The patrol pond should make records and discover problems and deal with them in time.
Fourth, timely fishing and shrimp fishing can be based on market conditions and growth specifications to take a combination of catch and centralized fishing. The clams have to wait until the dry pool is caught at the end of the harvest. Due to the relatively concentrated catching of crickets, if they can not be sold off once, they can be raised temporarily, and 25 centimeters thick moist sand can be laid on the idle floor of the home or warehouse, and the pupa can be buried in the sand. Usually at room temperature about 15 °C, can save more than 30 days. During the period, it can be gradually listed and sold according to the market conditions at that time. In addition to the cultivated method of the year, the polyculture of shrimp and prawn also includes two-year cultivation methods of small quail species and shrimps, three-year cultivation methods of seedlings and shrimps, etc., and local production can be performed according to local specific conditions and market conditions.
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