The successful polyculture model of shrimp and crabs, how to polyculture shrimp and crabs?

Shrimp and crab polyculture" mode, one is lobster plus crab, and the other is lobster plus crab plus green shrimp. There are successful precedents for the two polyculture models, but in the end, the net income is almost the same as that of a single crab culture, and the shrimp and crab polyculture is labor-intensive.

In the same aquaculture water body, both river crabs, fish and green shrimp are raised, which is an efficient ecological polyculture model. According to its breeding type, it can be divided into three types of shrimp, crab and fish polyculture modes: pond, rice field and large water surface. The implementation of shrimp, crab and fish polyculture has not only increased the breeding objects, but also increased the aquaculture output.

Generally, the pond based on crab farming produces about 30 kg of green shrimp per mu.

How to polyculture shrimp and crabs: (1) Crab species. Select crab species with neat specifications, strong physique, agile crawling, no disease and no injury, the specification is 150 200 kilograms, 1500 per mu are released, and the stocking time is in mid to late March.

2) Green shrimp. Stocking of broodstock or overwintering shrimp species. The size of the broodstock is 210 kg

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Polyculture has formed a pond shrimp and crab polyculture model with crabs as the main and shrimp as the supplement. Typically, varieties with similar ecological niches.

Ornamental shrimp should not be polycultured with crabs.

Ornamental shrimp is not a species, but a general term for a class of shrimp with ornamental value in shrimp, a group of 38 species. Ornamental shrimp are popular with aquarium lovers because of their beautiful appearance, and have become a popular pet breed in China, especially in aquarium stores in large and medium-sized cities, where they can often be seen. Ornamental shrimp are basically small in size, with a body length of about centimeters.

In addition to the ornamental shrimp's beautiful appearance and ornamental value, some of them are also good at removing algae, and their ability to remove algae is highly recognized by aquatic weed players. Ornamental shrimp do not have strict requirements for the living environment, but it takes more patience and care to raise shrimp out of state and to raise them to the extreme.

Ornamental shrimp has a feature that is transparent, some can see the bones, and its swimming posture is very cute, which leads to many people love it, and there are different colors, which leads to higher ornamental value, and ornamental shrimp has become popular in China.

Depending on the size, the effect is the same as that of separate farming.

No, when I raised crabs, I used shrimp to make food for him, and I put them alive and they were eaten in less than five minutes.

Shrimp and crabs can be polycultured shrimp and fish are not necessarily, depending on the size and species of the individual (for example, freshwater gobies like to eat small shrimp, and some crayfish will catch small fish to eat) Most of the fish and crabs are not good, but also depends on the species.

"It is said that there can be no lobster in the crab pond, in fact, this is not scientific, last year my acre of water surface, on the fishing of 1200 kilograms of lobster, 1200 kilograms of crabs, the annual income of 10,000 yuan. On the 10th, Wei Jie, a farmer in the fourth group of Yuanjing Village, Binhu Office, Honghu City, took a stack of shipping lists and said to the author.

Known as the "First Township of Hubei River Crab", the Binhu Office of Honghu City has been focusing on crab breeding over the years, with a breeding area of nearly 100,000 mu (including 60,000 mu in captivity in the Great Lake) and an annual production of more than 6,000 tons of high-quality crabs. The Binhu people who made a fortune on crabs are not satisfied with the status quo, and always want to dig more gold in the crab pond, so they rely on the river crab breeding association to successively raise mandarin fish, yellow catfish and other famous and special fish in the crab pond have been successful.

With the popularity of the international lobster market, they have set their sights on shrimp and crab polyculture. Traditional crab farming has always treated lobsters as enemies, and lobsters must be poisoned before they are released. In order to promote the symbiosis of shrimp and crabs, the Crab Breeding Association invited experts from the Provincial Institute of Water Science to teach breeding techniques, and also organized large farmers to visit Qianjiang for two occasions to investigate the experience of lobster farming.

According to the growth and activity habits of shrimp and crabs, farmers have explored a set of experience such as early feeding, timely fishing, and opening up the growth time difference of shrimp and crabs, so that not only shrimp and crabs no longer kill each other for food, but also can effectively use the water space.

It is understood that this year, the Binhu Office has promoted the "shrimp and crab polyculture" model with an area of 10,000 mu, and the lobster income can reach 20 million yuan, and the growth of crabs is also better than in previous years.

Lobsters and crabs can be polycultured, but fish can't, and in that case, the catch rate of fish will be very small

Lobsters like to feed on young fish.

Polyculture is not allowed. The size of the fish is not even bigger than the shrimp. This will frighten the fish and make it small. Easy to die.

China's shrimp and crab industrial belt was built by Huanong Industry with an investment of 100 million yuan.