Ezhou City, Hubei Province designated the aquaculture industry as a pillar industry of the rural economy. The city implemented a pollution-free high-yield aquaculture production model at the Huarong Mingte Aquaculture Base, obtaining an average yield of 1195.8 kilograms per mu, a yield of 6894 yuan per mu, and a net profit of 3215 yuan per mu. Economic benefits. It has been promoted and applied in Huanggang, Huangshi, Jiangxi, Anhui and other places in the province.
Mainly for grass carp, 1000 kilograms of pollution-free farming model introduced:
1. Pond condition: The water depth is 2.5 to 3 meters, the water source is sufficient, the water quality is fresh, the water injection and drainage are convenient, the oxygen aeration facilities are complete, and the green feed field accounts for 30% of the water surface. The area of ​​the pond is from 10 mu to 15 mu and the environment is good, which is suitable for intensive cultivation and high yield.
2. Retrieval fishing forms: one seeding and multiple fishing.
3. Put and production of fish per acre.
4. Input per mu of feed and fertilizer: (1) Green feed requirement. 3000 kg of ryegrass and Sudan grass can produce 190 kilograms of herbivorous fish. Calculate the total 590 kilograms of eating fish from the table, subtract the weight of grass for fish, and lose 406 kilograms. (crude protein 25, feed coefficient 2.4) 970 kg to 1000 kg.
(2) Dedicated Fish Fertilizer Requirements. Calculated from the table, the net production of filter-feeding fish is 404 kilograms, and 210 kilograms of dietary fish is replaced, and the remaining 194 kilograms are required. Special fish fertilization is required for 194 kilograms to 200 kilograms.
5. Key breeding techniques: (1) Do a good job of disinfection. 15 days before the fish species are stocked, the depth of water per acre of the fish pond is 0.1 meters, and the whole slurry of the calcined slurry of 75 kg is sprinkled all over the pond.
(2) Do fish disinfection. Each 50 kg of water use salt 1.5 kg ~ 2 kg, dip fish species, second-in-age grass carp dip when added with a small amount of crystal enemy white insects, dipping time 15 minutes to 30 minutes, depending on the specific time water temperature, fish tolerance and set.
(3) Reasonably feed the feed. Feeding green and refined feeds should be done with "high-quality footing, balanced, two-headed, middle-green", ie, March and October-November with concentrate feeds, and April-September with mainly green feeds. Eat, stop eating late, grab the middle, take two. In the cultivation of green fodder, we advocate the use of large-scale fertilizers to achieve high quality and high yields.
(4) Skillfully applied special fish fat. When using special fish fertilizer, it should be applied from the water temperature of 12°C at the beginning of March until the end of mid-November. The first time the dosage is too large, according to the water depth of 1 meter, 10 kg per mu, (as base fertilizer); 15 days and then the second time, the amount of 6 kg per mu; April water depth of 1.2 meters, once every 10 days, 6 kg per mu; May water depth of 1.4 meters, once every 8 days, 7 kg per mu June water depth is 1.6 meters, applied once every 6 days, 8 kg per mu; July and August water depth is more than 1.8 meters, applied once every 5 days, 10 kg per mu; September water depth is more than 2 meters every 5 days Application once, 10 kg to 12 kg per mu; October water depth 1.6 to 1.8 meters, once every 8 days to 10 days, 10 kg per mu; November water depth 1.5 to 1.6 meters, once every 8 days 10 kg per mu. During the period from beginning to end, it is necessary to adjust it according to the principle of “living, refreshing, and tenderâ€.
(5) Pay attention to regulating water quality. The quality of water directly affects the feeding, digestion, and absorption of fish. In general, the larger the water body, the stronger its own regulation and better water quality. Water quality control measures include: First, rational use of oxygen aerators to prevent fish floating heads, hot weather noon to open the aerator for about 1 hour, break the warm layer, accelerate the convection of the upper and lower layers of the water, increase the dissolved oxygen in the lower water layer The second is to adjust the water quality once every 20 days to 1 month with "Yu Yu Huan" ecological preparation or quicklime, maintain the pH of the water to be neutral to weakly alkaline, and add new water regularly and replace some old ones. Water keeps the water fresh and ensures that the pool water has a high dissolved oxygen content.
(6) Proportioned pellet feed. According to the amount of fish in the fishing pond and the seasonal water temperature, the amount of pellet feed that is put into the year can be allocated on a monthly basis. That is 1% in March, 4% in April, 8% in May, 14% in June, 18% in July, 20% in August, 21% in September, 12% in October, and 2% in November.
6. Important implications for technology promotion: "Net fish-to-net fish model" focuses on the quality of products while increasing yields. It does not affect human health drugs and feeds containing hormones, in line with pollution-free aquatic product breeding and modern fishery. Production development requirements. Aquaculture farmers can master their breeding techniques quickly and well, and they can truly fish stocks rationally, use fertilizers, and feed scientifically to prevent fish diseases on a regular basis.
Mainly for grass carp, 1000 kilograms of pollution-free farming model introduced:
1. Pond condition: The water depth is 2.5 to 3 meters, the water source is sufficient, the water quality is fresh, the water injection and drainage are convenient, the oxygen aeration facilities are complete, and the green feed field accounts for 30% of the water surface. The area of ​​the pond is from 10 mu to 15 mu and the environment is good, which is suitable for intensive cultivation and high yield.
2. Retrieval fishing forms: one seeding and multiple fishing.
3. Put and production of fish per acre.
4. Input per mu of feed and fertilizer: (1) Green feed requirement. 3000 kg of ryegrass and Sudan grass can produce 190 kilograms of herbivorous fish. Calculate the total 590 kilograms of eating fish from the table, subtract the weight of grass for fish, and lose 406 kilograms. (crude protein 25, feed coefficient 2.4) 970 kg to 1000 kg.
(2) Dedicated Fish Fertilizer Requirements. Calculated from the table, the net production of filter-feeding fish is 404 kilograms, and 210 kilograms of dietary fish is replaced, and the remaining 194 kilograms are required. Special fish fertilization is required for 194 kilograms to 200 kilograms.
5. Key breeding techniques: (1) Do a good job of disinfection. 15 days before the fish species are stocked, the depth of water per acre of the fish pond is 0.1 meters, and the whole slurry of the calcined slurry of 75 kg is sprinkled all over the pond.
(2) Do fish disinfection. Each 50 kg of water use salt 1.5 kg ~ 2 kg, dip fish species, second-in-age grass carp dip when added with a small amount of crystal enemy white insects, dipping time 15 minutes to 30 minutes, depending on the specific time water temperature, fish tolerance and set.
(3) Reasonably feed the feed. Feeding green and refined feeds should be done with "high-quality footing, balanced, two-headed, middle-green", ie, March and October-November with concentrate feeds, and April-September with mainly green feeds. Eat, stop eating late, grab the middle, take two. In the cultivation of green fodder, we advocate the use of large-scale fertilizers to achieve high quality and high yields.
(4) Skillfully applied special fish fat. When using special fish fertilizer, it should be applied from the water temperature of 12°C at the beginning of March until the end of mid-November. The first time the dosage is too large, according to the water depth of 1 meter, 10 kg per mu, (as base fertilizer); 15 days and then the second time, the amount of 6 kg per mu; April water depth of 1.2 meters, once every 10 days, 6 kg per mu; May water depth of 1.4 meters, once every 8 days, 7 kg per mu June water depth is 1.6 meters, applied once every 6 days, 8 kg per mu; July and August water depth is more than 1.8 meters, applied once every 5 days, 10 kg per mu; September water depth is more than 2 meters every 5 days Application once, 10 kg to 12 kg per mu; October water depth 1.6 to 1.8 meters, once every 8 days to 10 days, 10 kg per mu; November water depth 1.5 to 1.6 meters, once every 8 days 10 kg per mu. During the period from beginning to end, it is necessary to adjust it according to the principle of “living, refreshing, and tenderâ€.
(5) Pay attention to regulating water quality. The quality of water directly affects the feeding, digestion, and absorption of fish. In general, the larger the water body, the stronger its own regulation and better water quality. Water quality control measures include: First, rational use of oxygen aerators to prevent fish floating heads, hot weather noon to open the aerator for about 1 hour, break the warm layer, accelerate the convection of the upper and lower layers of the water, increase the dissolved oxygen in the lower water layer The second is to adjust the water quality once every 20 days to 1 month with "Yu Yu Huan" ecological preparation or quicklime, maintain the pH of the water to be neutral to weakly alkaline, and add new water regularly and replace some old ones. Water keeps the water fresh and ensures that the pool water has a high dissolved oxygen content.
(6) Proportioned pellet feed. According to the amount of fish in the fishing pond and the seasonal water temperature, the amount of pellet feed that is put into the year can be allocated on a monthly basis. That is 1% in March, 4% in April, 8% in May, 14% in June, 18% in July, 20% in August, 21% in September, 12% in October, and 2% in November.
6. Important implications for technology promotion: "Net fish-to-net fish model" focuses on the quality of products while increasing yields. It does not affect human health drugs and feeds containing hormones, in line with pollution-free aquatic product breeding and modern fishery. Production development requirements. Aquaculture farmers can master their breeding techniques quickly and well, and they can truly fish stocks rationally, use fertilizers, and feed scientifically to prevent fish diseases on a regular basis.
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