CATDOLL : CATDOLL: How many sea cucumber seedlings should be planted per acre? How many sea bass seedlings should be planted per acre?

1. How many sea cucumber seedlings should be planted per acre?

Generally, 8,000 to 10,000 heads are released per mu for the first time, and the minimum size is 200 heads. However, to achieve a yield of 400 kilograms, the key depends on the survival rate of the released seedlings, the breeding technology, the control of the seawater environment and other conditions. The survival rate of the first release is generally below 40%, and the second release can maintain a survival rate of more than 60%.

2. How many sea bass seedlings should be planted per acre?

How to farm sea bass

1. Fish pond conditions: California bass ponds require sufficient water supply, convenient drainage and irrigation, no water leakage, a water depth of more than 1.5 meters, good water quality, no pollution, ventilation and light, loam bottom, the area should not be too large, 1 to 2 acres is appropriate, and it should be equipped with an aerator.

2. Stocking density: Generally, 2,000 to 2,500 California bass fry are released per acre. A fish pond with good conditions and equipment can release 3,000 to 4,000 fry. Appropriate mixed culture of silver carp, bighead carp, grass carp and bream can help clean up feed residues and regulate water quality.

3. Bait selection: The key to California bass farming is to have enough bait fish. You can use fish ponds to cultivate silver carp and bighead carp fry, or you can use adult fish ponds to block off part of the pond with a net to raise small fish. You can also buy wild fish or special compound bait.

4. Feeding: California bass is a ferocious fish that feeds on live fish. Feeding is usually done once in the morning and once in the afternoon. When the water temperature is between 20 and 25 degrees Celsius, the daily feed amount is 10 to 15% of the fish weight. However, it should be flexibly controlled depending on the fish's feeding, activity conditions and weather changes.

5. Daily management

① Pond inspection: Inspect the fish pond every day to observe the activities of fish and changes in water quality. Avoid making the water too turbid or fertile. The transparency should be 30 cm. Identify problems in time and take measures to resolve them.

②Prevent pesticides: Strictly prevent pesticides, pollutants, etc. from flowing into the pond to avoid the death of pond fish. Especially young fish are extremely sensitive to pesticides. Even a small dose can cause the death of all the fish in the pond. Great attention must be paid.

③Feeding: The amount of feed should be appropriate, avoid too much or too little. At the same time, avoid long-term use of a single feed. Vitamins and minerals should be added to the feed to maintain normal nutritional requirements.

④Separation and thinning: Classify and thin out fish in a timely manner, about once every two months, and stock fish of the same size in the same pond to prevent big fish from eating small fish. Separation and thinning should be done in the morning when the weather is good, and avoid separation and thinning in hot or cold weather.

3. How many kilograms of shrimp fry can be raised in one acre of land?

How many kilograms of shrimp fry to raise can be calculated by referring to the following formula: Stocking quantity = (planned fry production (kg) × required number of shrimps to grow to 1 kg) / expected survival rate In the formula: the planned per-mu production can refer to the annual production of neighboring areas; the number of shrimps to grow to 1 kg can be calculated as 30 to 50 (body length 12 to 15 cm); the survival rate is calculated at 50% to 70%, and the intermediate culture shrimp fry is calculated at 85%. Under normal circumstances, the intensive shrimp pond can be stocked with about 20,000 shrimps per mu (not more than 25,000 shrimps) under the conditions of good shrimp fry quality, excellent water exchange conditions, guaranteed bait, and high feeding management level. For shrimp fry that have been intermediately cultivated (body length about 2.5 cm), the stocking quantity per mu is controlled between 8,000 and 12,000 shrimps.

4. How many seedlings can be planted in a 100-acre sea cucumber circle?

Generally, 8,000 to 10,000 heads are released per mu for the first time, and the minimum size is 200 heads. However, to achieve a yield of 400 kilograms, the key depends on the survival rate of the released seedlings, the breeding technology, the control of the seawater environment and other conditions. The survival rate of the first release is generally below 40%, and the second release can maintain a survival rate of more than 60%.

5. How many river crab seedlings should be planted in one acre of rice field?

Raising river crabs in rice fields, one mu of crab seedlings yields about 100 kilograms. There are also costs for labor, feed, and prevention and control drugs. River crabs are more delicate, so raising lobsters is better.

6. How many mandarin fish should be raised per acre?

1. For one acre of water surface for breeding mandarin fish, the number of seedlings released will vary depending on the breeding density and breeding method.

2. Generally speaking, the appropriate number of mandarin fish fry to be released per mu is between 3,000 and 5,000. It can also be adjusted according to the size of the pond, aquatic plants, water quality, water temperature, etc.

3. At the same time, during the breeding process, attention should be paid to controlling the feed, water quality, light, ventilation and other environments of the seedlings to improve the survival rate and growth rate in order to obtain better breeding benefits.

7. How many carp seedlings should be released per acre?

If it is carp alone, the stocking density is 120,000 to 150,000 per mu.

Before the fry are put into the pond, drain the pond water and clean the pond (use 115 kg/mu of quicklime). About 10 days before the fry are put into the pond, fill it with 50 cm to 70 cm of water. Use gauze to filter the water when filling it to prevent aquatic insects, sword water fleas, wild fish, etc. from entering the pond. Fertilize the pond and apply 305 kg/mu of fermented animal manure one week before the fry are put into the pond. After one week, the water color turns into tea color and the fry are put into the pond.

8. How many seedlings are there in one acre of free-range eel farming?

Selection of eel seedlings

The quality of eel species and the breeding seed of yellow eel are the key. At present, yellow eels are generally caught by cages (baskets) and hooks. Yellow eels caught by cages (baskets) can be stored except for those with scratches on the body. Yellow eels caught by hooks are seriously injured and are generally not suitable for storage. You should choose those with strong physique, no injuries or lesions, strong mobility, and normal mucus secretion. It is advisable to choose local varieties such as dark yellow large spotted eels and earth red large spotted eels. The size of yellow eel seedlings should be 30 to 60 per kilogram. The stocking density of cage culture is generally 1 to 1.5 kilograms of eel seedlings per square meter.

9. How many eel seedlings can be raised per acre?

If the rice field is used for eel farming, 13,000 to 15,000 eels are usually stocked per mu, and each eel weighs 10 to 20 grams. If rice cultivation and eel farming are carried out together, 1,500 to 2,500 eels are usually stocked per mu, and each eel weighs 20 to 30 grams.

1. How many eels can be raised in one acre of rice field?

1. Breeding quantity

If it is a single breeding (no rice planting), generally 13,000 to 15,000 eels can be raised per mu, each weighing 10-20g; if rice planting and eel breeding are carried out together, generally 1,500 to 2,500 eels can be raised per mu, each weighing 20-30g.

10. How many mandarin fish should be raised per acre?

Don't raise too many. It's best to put about 1,000 fish in one acre of pond, because you don't have much experience in breeding at the beginning. After you have mastered certain techniques, you can increase the stocking density. Mandarin fish generally eat small fish and shrimps in the water, as well as some plankton. They also need to be fed with some nutritious feed to meet their growth needs.