Due to the particularity of the production of fingerlings, the seed ponds are idle for 4-5 months each year, and their utilization rate is not high. After years of exploration and research, the author has summarized the polyculture technology of fingerlings and shrimps, which is a kind of fish pond. The rational use of the way to increase production and increase efficiency. Polyculture ponds can increase the production of 25-40kg of fresh shrimp per mu, and increase the benefits of 500-1000 yuan. The main points of its breeding techniques are described below:
First, pond conditions: General requirements area 1-5 acres, water depth 1-1.5m, less sediment. In order to concentrate fishing and clear ponds, it is convenient to excavate about 1m wide at the bottom of the pond, with a "ten" or "feng" shape depth of 0.4-0.5m to set the shrimp ditch. In the first year of polyculture, the pool water is drained in the winter and spring to remove silt. Each lore is sterilized with 75kg of quicklime and 15-30kg of wolfberry tea. After the temperature rises in early spring, the water injection is about 30cm, and Elodea and Valeriana are planted. , black algae and other aquatic plants, for the green shrimp habitat, to avoid the enemy and the oyster shell. Before stocking shrimps, apply basic fertilizers, cultivate basic baits, and adjust water quality by adding new water.
Second, shrimp species stocking: shrimp species stocking there are three ways: First, hold the eggs and broodstock, requires a healthy body, bright color, complete limbs. Mu lkg is about to be released, and it can be stocked from the 2nd to the 5th month, allowing it to breed and raise its own in the fingerling pool. The second is to stockseed the shrimps of the next year, and select young larvae that have not reached the market specifications in the previous year. They are disease-free, non-injury and have neat specifications. Acre 3-5kg, ponds can be stocked after disinfection. The third is the stocking of shrimp that was reared in the same year, with a size of more than 1cm, and about 30,000 mu, which will be carried out one month after the summer fish species have entered the pond.
Third, the fish stocking: It is best to develop a special pool to cultivate "spray", bred more than 3cm of summer flowers and then into the shrimp pond. Mixed fishes are commonly used for cockroach, eel, grass, cockroach and cockroach, and are generally dominated by sturgeon. The eel market is popular and contradictory with shrimp; cod and eel are all filter feeders, cod cod is living with young shrimps. There is no significant impact on the rate, although the squid is severely devoured by the squid, but it is suitable to control the growth of the shrimp; although the grass carp is eating fish, the residue grass roots can become a hidden object of the greens; the polyculture pond should avoid the squid and carp. A shrimp that can eat large amounts of prawn and stumps. The amount of stocking depends on the requirements of fish species, yield, and other factors. Generally, 0.5 to 10 thousand seeds per mu are released.
Fourth, feeding and fertilizing: Fish species are fed according to conventional methods. The shrimps start to feed at a water temperature of 10°C. In addition to cultivating natural food through fertilization, artificial shrimps are fed once a day in the evening. Commonly used foods include crushed snail meat, soybean meal, wheat flour, and bran. The feed amount accounts for 3%-5% of the body weight of shrimp, combined with poolside sprinkle and spot feeding. Fertilizing the bait is beneficial to the metamorphosis development of the shrimp. Generally, the organic fertilizer is decomposed every 15-20 days. However, the water should not be too fat. The transparency is 25-30cm, and the morning fish do not float.
V. Daily management: Adhere to the patrol once a day, morning and evening, check the water quality, dissolved oxygen, fish and shrimp eating and activities, and inject water 20-30cm every 5-7 days so that the water in the pool can maintain high dissolved oxygen. From April onwards, lime slurry is splashed every 20 days or so, and 5 to 10 kg of mu is used to prevent diseases of fish and shrimp and adjust the pH value of pool water. Green prawns are particularly sensitive to organophosphorus pesticides. Special attention should be paid to water injection and fish disease control.
Sixth, the green shrimp fishing: fish pond pool mixed green shrimp, as long as the package is good, can be caught round the catch into the market, according to market conditions and pond shrimp density, can be caught once a day or 10-15 days, using dip net, Cage, shrimp trawl, dump cage and other tools to catch large and small. Clear pond once a year.
First, pond conditions: General requirements area 1-5 acres, water depth 1-1.5m, less sediment. In order to concentrate fishing and clear ponds, it is convenient to excavate about 1m wide at the bottom of the pond, with a "ten" or "feng" shape depth of 0.4-0.5m to set the shrimp ditch. In the first year of polyculture, the pool water is drained in the winter and spring to remove silt. Each lore is sterilized with 75kg of quicklime and 15-30kg of wolfberry tea. After the temperature rises in early spring, the water injection is about 30cm, and Elodea and Valeriana are planted. , black algae and other aquatic plants, for the green shrimp habitat, to avoid the enemy and the oyster shell. Before stocking shrimps, apply basic fertilizers, cultivate basic baits, and adjust water quality by adding new water.
Second, shrimp species stocking: shrimp species stocking there are three ways: First, hold the eggs and broodstock, requires a healthy body, bright color, complete limbs. Mu lkg is about to be released, and it can be stocked from the 2nd to the 5th month, allowing it to breed and raise its own in the fingerling pool. The second is to stockseed the shrimps of the next year, and select young larvae that have not reached the market specifications in the previous year. They are disease-free, non-injury and have neat specifications. Acre 3-5kg, ponds can be stocked after disinfection. The third is the stocking of shrimp that was reared in the same year, with a size of more than 1cm, and about 30,000 mu, which will be carried out one month after the summer fish species have entered the pond.
Third, the fish stocking: It is best to develop a special pool to cultivate "spray", bred more than 3cm of summer flowers and then into the shrimp pond. Mixed fishes are commonly used for cockroach, eel, grass, cockroach and cockroach, and are generally dominated by sturgeon. The eel market is popular and contradictory with shrimp; cod and eel are all filter feeders, cod cod is living with young shrimps. There is no significant impact on the rate, although the squid is severely devoured by the squid, but it is suitable to control the growth of the shrimp; although the grass carp is eating fish, the residue grass roots can become a hidden object of the greens; the polyculture pond should avoid the squid and carp. A shrimp that can eat large amounts of prawn and stumps. The amount of stocking depends on the requirements of fish species, yield, and other factors. Generally, 0.5 to 10 thousand seeds per mu are released.
Fourth, feeding and fertilizing: Fish species are fed according to conventional methods. The shrimps start to feed at a water temperature of 10°C. In addition to cultivating natural food through fertilization, artificial shrimps are fed once a day in the evening. Commonly used foods include crushed snail meat, soybean meal, wheat flour, and bran. The feed amount accounts for 3%-5% of the body weight of shrimp, combined with poolside sprinkle and spot feeding. Fertilizing the bait is beneficial to the metamorphosis development of the shrimp. Generally, the organic fertilizer is decomposed every 15-20 days. However, the water should not be too fat. The transparency is 25-30cm, and the morning fish do not float.
V. Daily management: Adhere to the patrol once a day, morning and evening, check the water quality, dissolved oxygen, fish and shrimp eating and activities, and inject water 20-30cm every 5-7 days so that the water in the pool can maintain high dissolved oxygen. From April onwards, lime slurry is splashed every 20 days or so, and 5 to 10 kg of mu is used to prevent diseases of fish and shrimp and adjust the pH value of pool water. Green prawns are particularly sensitive to organophosphorus pesticides. Special attention should be paid to water injection and fish disease control.
Sixth, the green shrimp fishing: fish pond pool mixed green shrimp, as long as the package is good, can be caught round the catch into the market, according to market conditions and pond shrimp density, can be caught once a day or 10-15 days, using dip net, Cage, shrimp trawl, dump cage and other tools to catch large and small. Clear pond once a year.