In recent years, the aquaculture industry has made great progress, but most of them are in a state of extensive culture, and the yield is not high. The efficiency is poor. Based on the investigation and research, the author puts forward the high yield intensive culture technology of Huangqi, and the specific operations are as follows:
1 Infrastructure
1.1 Dianchi Lake: Dianchi Lake shall be constructed in a place where sheltered winds are sunny and water sources are adequate. The Dianchi Lake is made of bricks and concrete. The pool shape is rounded corners. The area of ​​a single pond is about 10 square meters, and the depth of the pool is 50cm. The pool is built into a “T†shape to prevent escape, and the bottom of the pool is toward the outlet. There is a gradient. Due to the use of a micro-fluid-free water culture method, the tiles are tiled within 20cm below the bottom of the pool. If conditions permit, the bottom of the pool should be tiled to prevent abrasions to the abdomen of the carp and cause infections. In specific production, multiple pools can be used. Line up or use a trapezoidal cube pool.
1.2 Water Supply and Drainage System: In order to ensure that there is sufficient water in the microfluidic water culture, one shall be excavated in the sedimentation tank and the reservoir in the infrastructure construction. Settling pond 2-5 acres, reservoir 1-2 acres, both pools are land, but also can use the fish pond instead. In order to ensure the exchange of water temperature, a temperature adjustment tank needs to be built depending on the scale of breeding. The inlet and outlet of the culture pond are installed opposite to each other. The outlet should be installed at the lowest point of the pool. The overflow outlet should be located at a distance of 30cm from the bottom of the pool. Inlet and outlet ports are equipped with ball valve switches, and both drain outlets and overflow outlets have anti-escape fences. The total drain is connected to a drain outlet, an overflow outlet, and a sedimentation tank. In normal operation, the desired aquaculture water is pumped from the reservoir to the tempering tank, and the warm water is introduced into the dike ponds by the water pump or the natural fall through the inlet pipe, and then discharged from the dike pond to the main channel and flows into the sedimentation tank. The sedimentation tank is recycled after self-cleaning treatment. Of course, the use of recycled water should prevent cross-infection and secondary pollution problems. In the case of special circumstances, it is necessary to discharge the waste water to the outer waters.
1.3 Insulation and cooling facilities: The growth temperature of Astragalus is 24-25°C. Under the natural environment, the growth period of Astragalus is only 5-6 months. To achieve the goal of high yield, we should build a greenhouse and artificially create a 24-25. °C environment to extend the growth period of jaundice. The greenhouse adopts ordinary steel frame plastic greenhouses. Generally speaking, in October from October to May of the following year in Jiangsu Province, it is necessary to increase the temperature of insulation, but in the high-temperature season from July to September, it is necessary to cool the shade. At this time, plastic greenhouses can be removed, covering the shading net with a shading rate of more than 90%. .
1.4 Oxygenation system: Although microfluidic water is used to raise sputum and the skin of Astragalus also has auxiliary respiratory function, it still needs oxygenation to further improve water quality and promote the growth of Scutellaria. Roots blowers are generally used to inflate the pool water through diffuser pipes. oxygen.
2 Breeding management
2.1 Dianchi Lake Preparation: The newly built Dianchi Lake needs to be soaked with water to remove alkali. If the bottom of the pool is not affixed with tiles, a glass steel plate or a non-toxic agricultural film is used for the bottom of the pool. The pool must also be put into the disinfected water peanuts. The purpose of putting peanuts on water is based on two aspects: on the one hand, the thick stalks of water peanuts can effectively prevent squid from entangling with each other; on the other hand, water peanuts can secrete antibiotics and reduce rickets, and in addition water peanuts can effectively reduce ammonia nitrogen in water. Improve water quality. The pool is filled with water 8-10cm, diverted into the outlet, so that the water inflow and outflow tends to be consistent.
2.2 Preparation of seedlings: At present, seedlings for artificial breeding are not yet common, and seedlings for aquaculture are still dominated by wild seedlings. Seedlings should be selected as a trap without injury. When selecting seedlings, attention should be paid to the selection of seedlings with deep yellow backs, dark brown spots, or yellow-necked seedlings. The specifications are about 20-30 tails per kilogram (if it is for conservation purposes). , you should buy more than 150g of each end of the Cheng Hao as well).
2.3 Stocking: Wild salmon seedlings often contain pathogenic bacteria or parasites. Therefore, they must be disinfected by a medicinal bath before stocking. The stocking amount should be controlled at 5-8 kg/m2. If it is not possible to put enough seedlings at one time, the latter shall be pooled for a period of time after the batch of seedlings enters the pool. In addition, a small amount of mud can be mixed to remove residual baits.
2.4 Feeding: Intestinal parasites such as thornheadworms are found in the intestine of wild seedlings. Therefore, it is necessary to use drugs for “intestinal clearing†and bait deworming before formal feeding. The seedlings are picky on the bait, and they like to eat fresh oysters and small fish and shrimps. However, in normal production, such a large amount of fresh live bait is difficult to guarantee supply and must be tame. When taming, it can be used to add pelleted bait or bait to make pelleted bait. After the success of domestication, gradually use artificial diet. When feeding, we must strictly follow the "four set" requirements. Of course, if you can farm artificially, you can use it as bait.
2.5 Disease prevention: In the cultivation of Astragalus membranaceus, disease prevention has always been a major problem. This is because there is no scale in the surface of Astragalus membranaceus and it is vulnerable to pathogenic bacteria and parasites, together with Astragalus is sensitive to most drugs. Not many, so in the production should be based on ecological prevention, such as: strict disinfection of aquaculture water, filtration, stocking in the pond, reduce man-made injuries, etc., in the usual see sickness should be promptly picked up isolation, Identify the cause and prescribe the right medicine.
2.6 Daily management: Intensive Astragalus is a relatively high technical requirement, which requires the farmer to have a strong sense of responsibility, standardize the operation, daily to observe the feeding situation of the carp, pay attention to whether the water intake and drainage in Dianchi are consistent, and prevent dryness. The pool phenomenon occurs. Regularly remove the bait and clean the pond.
1 Infrastructure
1.1 Dianchi Lake: Dianchi Lake shall be constructed in a place where sheltered winds are sunny and water sources are adequate. The Dianchi Lake is made of bricks and concrete. The pool shape is rounded corners. The area of ​​a single pond is about 10 square meters, and the depth of the pool is 50cm. The pool is built into a “T†shape to prevent escape, and the bottom of the pool is toward the outlet. There is a gradient. Due to the use of a micro-fluid-free water culture method, the tiles are tiled within 20cm below the bottom of the pool. If conditions permit, the bottom of the pool should be tiled to prevent abrasions to the abdomen of the carp and cause infections. In specific production, multiple pools can be used. Line up or use a trapezoidal cube pool.
1.2 Water Supply and Drainage System: In order to ensure that there is sufficient water in the microfluidic water culture, one shall be excavated in the sedimentation tank and the reservoir in the infrastructure construction. Settling pond 2-5 acres, reservoir 1-2 acres, both pools are land, but also can use the fish pond instead. In order to ensure the exchange of water temperature, a temperature adjustment tank needs to be built depending on the scale of breeding. The inlet and outlet of the culture pond are installed opposite to each other. The outlet should be installed at the lowest point of the pool. The overflow outlet should be located at a distance of 30cm from the bottom of the pool. Inlet and outlet ports are equipped with ball valve switches, and both drain outlets and overflow outlets have anti-escape fences. The total drain is connected to a drain outlet, an overflow outlet, and a sedimentation tank. In normal operation, the desired aquaculture water is pumped from the reservoir to the tempering tank, and the warm water is introduced into the dike ponds by the water pump or the natural fall through the inlet pipe, and then discharged from the dike pond to the main channel and flows into the sedimentation tank. The sedimentation tank is recycled after self-cleaning treatment. Of course, the use of recycled water should prevent cross-infection and secondary pollution problems. In the case of special circumstances, it is necessary to discharge the waste water to the outer waters.
1.3 Insulation and cooling facilities: The growth temperature of Astragalus is 24-25°C. Under the natural environment, the growth period of Astragalus is only 5-6 months. To achieve the goal of high yield, we should build a greenhouse and artificially create a 24-25. °C environment to extend the growth period of jaundice. The greenhouse adopts ordinary steel frame plastic greenhouses. Generally speaking, in October from October to May of the following year in Jiangsu Province, it is necessary to increase the temperature of insulation, but in the high-temperature season from July to September, it is necessary to cool the shade. At this time, plastic greenhouses can be removed, covering the shading net with a shading rate of more than 90%. .
1.4 Oxygenation system: Although microfluidic water is used to raise sputum and the skin of Astragalus also has auxiliary respiratory function, it still needs oxygenation to further improve water quality and promote the growth of Scutellaria. Roots blowers are generally used to inflate the pool water through diffuser pipes. oxygen.
2 Breeding management
2.1 Dianchi Lake Preparation: The newly built Dianchi Lake needs to be soaked with water to remove alkali. If the bottom of the pool is not affixed with tiles, a glass steel plate or a non-toxic agricultural film is used for the bottom of the pool. The pool must also be put into the disinfected water peanuts. The purpose of putting peanuts on water is based on two aspects: on the one hand, the thick stalks of water peanuts can effectively prevent squid from entangling with each other; on the other hand, water peanuts can secrete antibiotics and reduce rickets, and in addition water peanuts can effectively reduce ammonia nitrogen in water. Improve water quality. The pool is filled with water 8-10cm, diverted into the outlet, so that the water inflow and outflow tends to be consistent.
2.2 Preparation of seedlings: At present, seedlings for artificial breeding are not yet common, and seedlings for aquaculture are still dominated by wild seedlings. Seedlings should be selected as a trap without injury. When selecting seedlings, attention should be paid to the selection of seedlings with deep yellow backs, dark brown spots, or yellow-necked seedlings. The specifications are about 20-30 tails per kilogram (if it is for conservation purposes). , you should buy more than 150g of each end of the Cheng Hao as well).
2.3 Stocking: Wild salmon seedlings often contain pathogenic bacteria or parasites. Therefore, they must be disinfected by a medicinal bath before stocking. The stocking amount should be controlled at 5-8 kg/m2. If it is not possible to put enough seedlings at one time, the latter shall be pooled for a period of time after the batch of seedlings enters the pool. In addition, a small amount of mud can be mixed to remove residual baits.
2.4 Feeding: Intestinal parasites such as thornheadworms are found in the intestine of wild seedlings. Therefore, it is necessary to use drugs for “intestinal clearing†and bait deworming before formal feeding. The seedlings are picky on the bait, and they like to eat fresh oysters and small fish and shrimps. However, in normal production, such a large amount of fresh live bait is difficult to guarantee supply and must be tame. When taming, it can be used to add pelleted bait or bait to make pelleted bait. After the success of domestication, gradually use artificial diet. When feeding, we must strictly follow the "four set" requirements. Of course, if you can farm artificially, you can use it as bait.
2.5 Disease prevention: In the cultivation of Astragalus membranaceus, disease prevention has always been a major problem. This is because there is no scale in the surface of Astragalus membranaceus and it is vulnerable to pathogenic bacteria and parasites, together with Astragalus is sensitive to most drugs. Not many, so in the production should be based on ecological prevention, such as: strict disinfection of aquaculture water, filtration, stocking in the pond, reduce man-made injuries, etc., in the usual see sickness should be promptly picked up isolation, Identify the cause and prescribe the right medicine.
2.6 Daily management: Intensive Astragalus is a relatively high technical requirement, which requires the farmer to have a strong sense of responsibility, standardize the operation, daily to observe the feeding situation of the carp, pay attention to whether the water intake and drainage in Dianchi are consistent, and prevent dryness. The pool phenomenon occurs. Regularly remove the bait and clean the pond.
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