CATDOLL : CATDOLL: What is the cost per acre for sea cucumber farming?

1. What is the cost per acre of sea cucumber farming?

Qingdao: Sea cucumbers are divided into wild and farmed ones. Generally, wild ones are more expensive than farmed ones. The prices vary according to the length and distribution of the sea cucumber spines. Generally, farmed ones are cheaper if you buy them directly from the coastal farm areas of Laoshan. The price of dried ones is

The wild ones are priced between 1200 and 1800 yuan, and are generally 300 to 400 yuan more expensive.

Weihai: Before and after the Spring Festival, the prices of most varieties of seafood in Weihai's wholesale market were relatively stable, but the price of sea cucumbers soared sharply, and the market supply was relatively tight. Before the festival, the price of fresh sea cucumbers in Qianchan Market was generally 180 yuan/kg, and the price of sea cucumber skin once rose to 280 yuan/kg. At the same time, the prices of processed sea cucumber products also rose sharply.

Dalian: Recently, the price of sea cucumbers in Dalian has continued to rise. The price of freshly-caught sea cucumbers has risen from 75 yuan per 500 grams last year to 85 yuan, while the price of captive sea cucumbers has risen from 68 yuan per 500 grams to 75 yuan, an increase of about 10%. In the aquatic product market, the price of live sea cucumbers farmed naturally has reached more than 100 yuan per 500 grams, and the price of salted sea cucumbers has reached 200-300 yuan, and the price is on the rise.

Dried sea cucumber: about 500 yuan per pound

The stocking density of young ginseng is about 5 cm in length (50 g/head in weight), with 3 000-5 000 seedlings per 667m2 of water.

I don't know much about the cost, it's best to go to the sea cucumber breeding site to have a look

2. How to cultivate sea cucumbers to increase the survival rate

Cofferdam pond building

According to the requirements of the healthy breeding project of sea cucumbers, it is necessary to build a pond by throwing stones to cofferdam and create a standard pond of 80 mu in the form of stone reefs. A total of 180,000 m3 of stones were thrown to build an east-west, semi-tidal, and convenient sea cucumber healthy breeding experimental pond. In order to facilitate pond cleaning, the reefs in the pond are ridge-type, and stones are thrown along the "leek"-shaped frame. The reef is 2.5m wide and 1.2m high, and the total length of the reef ridge is 3580m. The west weir of the pond is adjacent to the sea, and there are two high and low inlet and outlet gates. The low gate is used for pond cleaning and drainage, and its gate base is level with the lowest tide level. The base of the high gate is at the semi-tidal level, and the tide can be naturally introduced into the pond by using the tidal difference. Both high and low gates can be controlled manually. In addition, one set of inlet and outlet pump units is specially installed on the side of the weir adjacent to the sea for emergency use. After the pond is built, use a low gate to release the pond water at low tide, and pump out the rest of the water to remove the predators of sea cucumbers such as gobies, Japanese yam, and starfish. Level the pond bottom and spread 70kg of lime powder per mu for disinfection. After one week, apply 1000kg of fermented chicken manure per mu, let in 50cm of water, and fertilize the water for 60 days. When the water quality is stable and the benthic diatoms in the pond reproduce in large quantities, start to release sea cucumber seedlings.

Seed source and placement

Sea cucumber seedlings come from natural capture and artificial cultivation. The size of naturally captured seedlings varies, and the body length is generally 3 to 10 cm. Before the seedlings are released, they are temporarily raised for 3 to 5 days, graded and screened, and the injured and disabled sea cucumber seedling holes are removed and quickly put into the breeding pond. Artificially cultivated seedlings are all intermediately cultivated and released into the pond when the sea cucumber body is more than 5 cm long.

Feeding and management

After the sea cucumber seedlings are released, they enter the breeding and management stage, and their main tasks are to feed the feed and regulate the daily water quality.

Feeding: Feed is evenly fed into the culture pond every two days, including 50% starch, 20% sea mud, 8% fish meal and 22% seaweed powder. The feed is about 10% of the total amount of sea cucumbers in the sea area. In order to maintain stable water quality and abundant feed, piles are built on the artificial reefs in the pond to cultivate kelp and wakame. At the same time, algae such as giant algae and sargassum are transplanted into the pond to create a good habitat for the healthy cultivation of sea cucumbers.

Disease prevention measures: To prevent the occurrence of diseases, use disinfectant once every half a month and spray it throughout the pond during low tide, which can have a good disease prevention effect.

To prevent floating garbage and oil from entering the pond with the tide and polluting the water, three floating raft-type anti-oil nets are set up in the water inlet channel to intercept floating garbage and oil. The technicians observe the water quality in the pond every day, and conduct water quality tests every 7 days during the high temperature period. Whenever there is low tide and heavy rain, the water pump is started in time to transfer water into the pond to prevent the salinity of the pond from decreasing and the seawater from desalination.

Temperature control and oxygenation The high temperature season in Longkou is from mid-July to early September every year. From 11:00 a.m. to 3:00 p.m. every day, the aquaculture staff use 8-horsepower fishing boats to regularly sail and surf in the pond at high speed to increase oxygen and reduce temperature, so as to prevent the sea cucumbers from suffocating and dying due to lack of oxygen.

3. Why does the sea water turn green in the sea cucumber circle?

Hello, if the water in the sea cucumber circle turns green, it may be due to the massive reproduction of bacteria or pesticide pollution. You should see an expert immediately, as sea cucumbers are very expensive and carry a flammable substance.

[Sea cucumber farmers must know] Nine common grasses in the sea cucumber circle

Yellow tube grass: It grows slowly under the ice in winter and grows rapidly after the ice melts. It is a low-temperature grass and begins to die and rot when the water temperature rises to around 18℃.

2. Green tube sea cucumber: It is common in late spring and late autumn. It grows after the death of yellow tube sea cucumber or starts to grow after the ice melts. What's worse, it starts to grow before the ice melts. It can easily cause frostbite and desquamation of sea cucumbers, causing losses to sea cucumber farming.

3. Wire grass: It can grow from late spring to early summer. This grass has high fiber content and is not easy to kill and does not rot easily after death. It grows very fast and can grow dozens of centimeters a day during its peak growth period. It is one of the aquatic plants that poses a serious threat to sea cucumber farming.

4. Cladophora is common in summer and is similar to steel wire grass. The difference is that Cladophora is branched, like a steel wool ball, and is thinner and shorter than steel wire grass.

5. Sponge flower, which is common in summer, is a high-temperature grass. It starts to grow at temperatures above 20°C. When it grows in large quantities, it can cover the entire beach surface, causing hypoxia in the bottom, causing floating ginseng and bark closure. It is the most harmful grass.

6. Spirogyra: It grows in late spring and early summer. It is similar to green tube cabbage, but softer and thinner than green tube cabbage, and the surface of the grass is sticky.

7. Enteromorpha: It reproduces more in June-August. It is tubular, membranous, and branched. Some are leaf-shaped and can reach more than 1 meter in height. It can easily reproduce in large quantities under suitable conditions. Dead moss brings harm to sea cucumber farming.

8. Red moss (also known as red hair grass): It is common from June to September. It mostly grows on the edge of the ginseng circle dam. It is in clusters and has a high fiber content. It is not easy to rot. Due to the presence of gaps, it basically has no impact on the beach and sea cucumbers.

9. Chicken Claw Vegetable: It can be seen from June to September. It grows more in some ginseng circles and causes less harm. It can be picked out or left alone.

It should be microorganisms, colorful algae, etc., eutrophication