According to the experience of Huizhou City, the use of greenhouses to raise cubs can eliminate the hibernation of the cubs, and the juvenile owl with a size of 3-5 grams can be raised to 150-200 grams from May to June of the following year. The young pups can be kept in ponds until October to sell them, which can greatly shorten the feeding time, increase the safety factor, save costs, and increase economic efficiency. The following are the main practices:
1. The structure of plastic greenhouses is built according to the terrain and in accordance with local conditions. It is a single-slope or arch form, generally 40-50 meters long and 8-12 meters wide. Greenhouse skeleton is made of steel pipe, round steel and other materials. The roof is covered with double plastic film, the outer layer is made of polyethylene colorless transparent dustproof film with high light transmittance, strong pollution resistance and cold resistance, and the inner layer is made of high temperature-resistant and anti-aging anti-drip film with two layers of film inside and outside. 15-20 cm. In the greenhouse, cement ponds were built in the form of “two sides of pools and intermediate roadsâ€, and drains were built under the roads. Each pond has an area of ​​12-25 m2 and a depth of 80 cm. The bottom of the tank is designed with a slope of about 1 percent to the outlet. The drainage port is 5-10 cm lower than the bottom of the pool so that the sewage can be drained. Barbed wire escapes. Each aquaculture pond is equipped with a feed stand and a rest platform. A tempering pool is constructed at one end of the greenhouse adjacent to the water source. The bottom of the pool is higher than the surface of the culture tank for self-flow water supply. A 500-square-meter greenhouse needs a 60-ton tempering pool. The use of boiler heating, 1,000 square meters greenhouse with 0.5 tons of boilers. Equipped with aerators, 500m2 of greenhouses are equipped with an air compressor of 0.3m3 per minute. The compressors are installed in the workroom outside the greenhouse and are sent to the pool by pipeline. Lighting daylights, 4-6 fluorescent lamps of 40W per 100m2 greenhouse. Electrical equipment inside the greenhouse should be strengthened with protective facilities.
2. Prior to stocking and raising fish, breeding ponds should be disinfected. Use bleach concentration 500ppm, or potassium permanganate 20ppm, or formalin 100ppm, or quicklime 40-50ppm, etc., you can choose one. If it is a new cement pool, it should be soaked with lime 2-3 times, 5-7 days each time, and then disinfected. Discharge the disinfectant the next day and add fresh clean water. Vacancy of 20-30 ml of formalin per cubic meter of greenhouse space: Pour the formalin solution into plastic pots and add a small amount of potassium permanganate. No sand or mud to breed young larvae. It is necessary to have nursery ponds to feed young fish. It is required that the pool water be brownish green with a transparency of 10-15 cm. It is best to refer to the fertilizer and water in the fish ponds. If the water source is limited, use groundwater such as deep well water, and fertilize the water within 7-10 days in advance to meet the required standard water quality. The larvae are required to be disease-free, lively, and lively, with a size of 3-5 grams, stocking 15 per square meter. 25 only. When stocking, soak in bath with 3% salt water for 5-10 minutes, or use 1% salt and baking soda mixture, the ratio between them is 1:1, bath for 10-20 minutes, be careful not to use potassium permanganate and other strong irritant drug. Before stocking, they were adjusted into a thin paste with artificially formulated feed, and the juveniles were soaked in them for 1-3 hours for lure treatment.
1. The structure of plastic greenhouses is built according to the terrain and in accordance with local conditions. It is a single-slope or arch form, generally 40-50 meters long and 8-12 meters wide. Greenhouse skeleton is made of steel pipe, round steel and other materials. The roof is covered with double plastic film, the outer layer is made of polyethylene colorless transparent dustproof film with high light transmittance, strong pollution resistance and cold resistance, and the inner layer is made of high temperature-resistant and anti-aging anti-drip film with two layers of film inside and outside. 15-20 cm. In the greenhouse, cement ponds were built in the form of “two sides of pools and intermediate roadsâ€, and drains were built under the roads. Each pond has an area of ​​12-25 m2 and a depth of 80 cm. The bottom of the tank is designed with a slope of about 1 percent to the outlet. The drainage port is 5-10 cm lower than the bottom of the pool so that the sewage can be drained. Barbed wire escapes. Each aquaculture pond is equipped with a feed stand and a rest platform. A tempering pool is constructed at one end of the greenhouse adjacent to the water source. The bottom of the pool is higher than the surface of the culture tank for self-flow water supply. A 500-square-meter greenhouse needs a 60-ton tempering pool. The use of boiler heating, 1,000 square meters greenhouse with 0.5 tons of boilers. Equipped with aerators, 500m2 of greenhouses are equipped with an air compressor of 0.3m3 per minute. The compressors are installed in the workroom outside the greenhouse and are sent to the pool by pipeline. Lighting daylights, 4-6 fluorescent lamps of 40W per 100m2 greenhouse. Electrical equipment inside the greenhouse should be strengthened with protective facilities.
2. Prior to stocking and raising fish, breeding ponds should be disinfected. Use bleach concentration 500ppm, or potassium permanganate 20ppm, or formalin 100ppm, or quicklime 40-50ppm, etc., you can choose one. If it is a new cement pool, it should be soaked with lime 2-3 times, 5-7 days each time, and then disinfected. Discharge the disinfectant the next day and add fresh clean water. Vacancy of 20-30 ml of formalin per cubic meter of greenhouse space: Pour the formalin solution into plastic pots and add a small amount of potassium permanganate. No sand or mud to breed young larvae. It is necessary to have nursery ponds to feed young fish. It is required that the pool water be brownish green with a transparency of 10-15 cm. It is best to refer to the fertilizer and water in the fish ponds. If the water source is limited, use groundwater such as deep well water, and fertilize the water within 7-10 days in advance to meet the required standard water quality. The larvae are required to be disease-free, lively, and lively, with a size of 3-5 grams, stocking 15 per square meter. 25 only. When stocking, soak in bath with 3% salt water for 5-10 minutes, or use 1% salt and baking soda mixture, the ratio between them is 1:1, bath for 10-20 minutes, be careful not to use potassium permanganate and other strong irritant drug. Before stocking, they were adjusted into a thin paste with artificially formulated feed, and the juveniles were soaked in them for 1-3 hours for lure treatment.