Roof science breeding technology
2018-06-18 12:00:47
1. The roof of Dianchi Lake built and built by Dianchi Lake is a reinforced reinforced concrete slab with anti-seepage treatment at the top. The wall of the pool is “two or four walls outside, twelve walls inside†and is 0.7 meters to 1.0 meters in height. The proportion of mortar used in the construction is more than 1:2.5. Every 4 bricks to 6 bricks plus 8 mm of iron wire are the bones. There are 2 to 3 vertical wires in the four corners of the roof, and they are distributed in the longitude and the transverse direction. The size of the roof area depends on the size of the roof in the Dianchi Lake. The corners are used for rubbing treatment, and drainage channels and protective shade support rod holes are reserved. The Dianchi Lake is consistent with the building foundation so as to avoid dislocation and reduce the safety factor.
Dianchi facilities include three aspects: First, into the drainage system. Underground well water and tap water that are not exposed are not suitable for direct use. Therefore, a reservoir or a large iron box with a gap height of 1.5m to 2m should be set up next to the positive eaves pond so that the water can be mixed and buffered and flow into the Umchi pond. . The positive room pool is seedling pool and the first-level rearing pool, and the side room pool is the second rearing pool. As the main house is higher than the partial house, the primary pool is self-flowing to the secondary pool through the drop and discharged into the pigsty or outside the house after multiple uses. The second is protective nets. Set a protective net at 40 cm to 50 cm above the surface of the pool to avoid direct sunlight and rodent birds. The third is a simple greenhouse. According to the characteristics of suitable temperature for loach growth from 20°C to 30°C, in the low temperature season, a simple greenhouse with easy disassembly or roll-over type can be constructed to keep the temperature in the greenhouse above 20°C to ensure the normal growth of the loach and shorten its market cycle .
Second, put seedlings into
1. Sources of Seed Sources There are two sources of seedlings: One is the collection of wild natural seedlings. In shallow waters with deep mud, muddy ponds, and wild ponds, choose to catch wild seedlings in bamboo cages that are fed with fried bean cakes and animal viscera as bait in the evening. For the captured wild seedlings, they should be screened so that they are weak and strong. The second is semi-artificial nursery. During the breeding season, from the captured wild broodstock, individuals with normal body shape, normal color, no disease, no injury, full age 2 and weight exceeding 30 g were selected for breeding for several days at a ratio of 1:2 to 3 for males and females. Place spawning ponds for natural spawning. The spawning pond should be disinfected first, and 15 centimeters to 20 centimeters of fertilizer should be placed on the rear of the spawning pond. Organic manure fertilizer should be used to control the water temperature above 18 degrees Celsius. The obtained ovary was sterilized with a bundle of willow root, brown silk, and polyethylene fiber, and was evenly hung in the pool water. After spawning, the ovaries are transferred to hatching ponds for hatching, and seedlings are obtained in batches in batches. The incubation process should be kept still or micro-inflated. After fry removal, the ovaries are quickly removed and the animals are fed with bait. Paceful baits include egg yolks, fish meal, small algae, rotifers, cocoon powder, and soy milk. When the seedlings grow to 1 cm, they are divided into pools. When they reach 3 cm, they are put into large pools for cultivation.
2. The timing of seedling release depends on the source of the seed. Wild seedlings are from late April to mid-May and semi-artificial seedlings are from 15 to 30 days in advance. The density of seedlings shall be 2,000 to 4,000 tails per square meter within a body length of 1 cm, 300 to 500 tails per square meter within 3 centimeters, 50 to 85 centimeters over 3 centimeters. / square meter. The old pool was disinfected with a disinfectant prior to release, and the new pond was first sterilized after soaking. At the bottom of the pool, 20 cm to 40 cm of mud or fine sand is used. Water is injected from 30 cm to 50 cm. Basal fertilizer is applied to breed the basic food. The water transparency of the pool is kept between 15 cm and 25 cm. At this time, the seedlings will be screened and disinfected, and the seedlings will be grown in accordance with different specifications.
3. The feeding management muddy diet is not complicated and there are no strict requirements for food. In the early stage of cultivation, the quality of fertilized water and the reproduction of plankton are mainly based on the amount of egg yolk, wolfberry, cocoon, and soy milk. Different feeds are treated slightly depending on the opening of the seedlings, and the daily feeding amount is between 2% and 5% of the weight of the fish. During the middle and late breeding period, rice bran, fish meal, livestock and poultry waste, bran, bean dregs and other artificial baits are mainly fed. During this period, due to the increase of water temperature, the loach has entered a period of high growth, and the daily feeding amount needs to be increased to 5% to 10% of the fish body weight. Because Dianchi Lake is built on the roof of the house and faces empty and underneath houses, the temperature difference of the pool water changes greatly. Suddenly hot and cold can easily lead to out of control management and muddy growth. Therefore, in the initial stage of breeding and overwintering management, supplemented with a simple greenhouse, when the cold current is cooled, artificial heating is controlled using soil heating or coal stoves. The middle season of aquaculture is in the hot summer season. It is necessary to put a shady shade, increase the frequency of water changes, and keep the water temperature relatively stable. Pay attention to anti-snake, rodent-proof, and bird-prevention so as to avoid harm.
4. Disease prevention and control Common diseases include red fin disease, watery mildew, bubble disease and parasitic disease. The etiology and treatment methods are as follows: Red fin disease is caused by fish body injury and water body deterioration, and is caused by infectious bacteria. Hazardous, high incidence. If soaked with 10ppm tetracycline for 24 hours or with 1ppm effective chlorine spilled diseased fish, the addition of 1% to 2% antibiotic baits would be very effective.
Saprophyte is caused by low water temperature and injury to fish. Soak the sick fish with salt water for 5 minutes to 10 minutes. Bubble disease is caused by too much gas in the pool water. Pay attention to proper feeding and prevent water quality deterioration or over-fat treatment. Parasitic disease, with a ratio of 5:2 copper sulfate and ferrous sulfate mixture 0.7ppm spilled the whole pool can be.
Dianchi facilities include three aspects: First, into the drainage system. Underground well water and tap water that are not exposed are not suitable for direct use. Therefore, a reservoir or a large iron box with a gap height of 1.5m to 2m should be set up next to the positive eaves pond so that the water can be mixed and buffered and flow into the Umchi pond. . The positive room pool is seedling pool and the first-level rearing pool, and the side room pool is the second rearing pool. As the main house is higher than the partial house, the primary pool is self-flowing to the secondary pool through the drop and discharged into the pigsty or outside the house after multiple uses. The second is protective nets. Set a protective net at 40 cm to 50 cm above the surface of the pool to avoid direct sunlight and rodent birds. The third is a simple greenhouse. According to the characteristics of suitable temperature for loach growth from 20°C to 30°C, in the low temperature season, a simple greenhouse with easy disassembly or roll-over type can be constructed to keep the temperature in the greenhouse above 20°C to ensure the normal growth of the loach and shorten its market cycle .
Second, put seedlings into
1. Sources of Seed Sources There are two sources of seedlings: One is the collection of wild natural seedlings. In shallow waters with deep mud, muddy ponds, and wild ponds, choose to catch wild seedlings in bamboo cages that are fed with fried bean cakes and animal viscera as bait in the evening. For the captured wild seedlings, they should be screened so that they are weak and strong. The second is semi-artificial nursery. During the breeding season, from the captured wild broodstock, individuals with normal body shape, normal color, no disease, no injury, full age 2 and weight exceeding 30 g were selected for breeding for several days at a ratio of 1:2 to 3 for males and females. Place spawning ponds for natural spawning. The spawning pond should be disinfected first, and 15 centimeters to 20 centimeters of fertilizer should be placed on the rear of the spawning pond. Organic manure fertilizer should be used to control the water temperature above 18 degrees Celsius. The obtained ovary was sterilized with a bundle of willow root, brown silk, and polyethylene fiber, and was evenly hung in the pool water. After spawning, the ovaries are transferred to hatching ponds for hatching, and seedlings are obtained in batches in batches. The incubation process should be kept still or micro-inflated. After fry removal, the ovaries are quickly removed and the animals are fed with bait. Paceful baits include egg yolks, fish meal, small algae, rotifers, cocoon powder, and soy milk. When the seedlings grow to 1 cm, they are divided into pools. When they reach 3 cm, they are put into large pools for cultivation.
2. The timing of seedling release depends on the source of the seed. Wild seedlings are from late April to mid-May and semi-artificial seedlings are from 15 to 30 days in advance. The density of seedlings shall be 2,000 to 4,000 tails per square meter within a body length of 1 cm, 300 to 500 tails per square meter within 3 centimeters, 50 to 85 centimeters over 3 centimeters. / square meter. The old pool was disinfected with a disinfectant prior to release, and the new pond was first sterilized after soaking. At the bottom of the pool, 20 cm to 40 cm of mud or fine sand is used. Water is injected from 30 cm to 50 cm. Basal fertilizer is applied to breed the basic food. The water transparency of the pool is kept between 15 cm and 25 cm. At this time, the seedlings will be screened and disinfected, and the seedlings will be grown in accordance with different specifications.
3. The feeding management muddy diet is not complicated and there are no strict requirements for food. In the early stage of cultivation, the quality of fertilized water and the reproduction of plankton are mainly based on the amount of egg yolk, wolfberry, cocoon, and soy milk. Different feeds are treated slightly depending on the opening of the seedlings, and the daily feeding amount is between 2% and 5% of the weight of the fish. During the middle and late breeding period, rice bran, fish meal, livestock and poultry waste, bran, bean dregs and other artificial baits are mainly fed. During this period, due to the increase of water temperature, the loach has entered a period of high growth, and the daily feeding amount needs to be increased to 5% to 10% of the fish body weight. Because Dianchi Lake is built on the roof of the house and faces empty and underneath houses, the temperature difference of the pool water changes greatly. Suddenly hot and cold can easily lead to out of control management and muddy growth. Therefore, in the initial stage of breeding and overwintering management, supplemented with a simple greenhouse, when the cold current is cooled, artificial heating is controlled using soil heating or coal stoves. The middle season of aquaculture is in the hot summer season. It is necessary to put a shady shade, increase the frequency of water changes, and keep the water temperature relatively stable. Pay attention to anti-snake, rodent-proof, and bird-prevention so as to avoid harm.
4. Disease prevention and control Common diseases include red fin disease, watery mildew, bubble disease and parasitic disease. The etiology and treatment methods are as follows: Red fin disease is caused by fish body injury and water body deterioration, and is caused by infectious bacteria. Hazardous, high incidence. If soaked with 10ppm tetracycline for 24 hours or with 1ppm effective chlorine spilled diseased fish, the addition of 1% to 2% antibiotic baits would be very effective.
Saprophyte is caused by low water temperature and injury to fish. Soak the sick fish with salt water for 5 minutes to 10 minutes. Bubble disease is caused by too much gas in the pool water. Pay attention to proper feeding and prevent water quality deterioration or over-fat treatment. Parasitic disease, with a ratio of 5:2 copper sulfate and ferrous sulfate mixture 0.7ppm spilled the whole pool can be.
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