Ecological polyculturing method of sea cucumber, Penaeus monodon and Portunus trituberculatus

Abstract

This invention discloses an ecological polyculturing method of sea cucumber, Penaeus monodon and Portunus trituberculatus, which comprises the following steps: choosing the Portunus trituberculatus and Penaeus monodon with quick growth speed and high economic value based on the biological characteristics that the sea cucumber and decapod crustacean have different growth time and nutrition levels;and making full use of the idle water and abundant natural baits in the pond during the aestivation of the sea cucumbers to polyculture sea cucumbers, shrimps and crabs. The culturing method is characterized by optimizing the ecological environment of the pond, reducing pollution discharge and disease spread, using the water space effectively, reducing culturing and producing cost, increasing culturing output, etc.

Description

Technical field: [0001] The invention relates to a comprehensive ecological cultivation method for sea cucumber cultivation ponds, in particular to sea cucumbers and prawns monodon that can optimize the ecological environment of ponds, reduce pollution discharge and disease transmission, effectively use water body space, reduce cultivation production costs and increase cultivation output Ecological polyculture method with Portunus trituberculatus. Background technique: [0002] At present, in the northern coastal areas of my country where conditions permit, ponds are being built or renovated for the cultivation of sea cucumbers with high value. There are the following problems in the cultivation of single species of sea cucumber: [0003] 1. Sea cucumbers need to use drugs to remove fish, shrimp, and crabs in the pond before releasing the seedlings, which not only increases the cost, but also causes potential damage to the pond ecosystem; [0004] 2. Most of the ponds trea...

AI Technical Summary

Problems solved by technology

[0003] 1. Sea cucumbers need to use drugs to remove fish, shrimp, and crabs in the pond before releasing the seedlings, which not only increases the cost, but also causes potential damage to the pond ecosystem;

[0004] 2. Most of the ponds treated with drugs have high water transparency, poor nutrition, and a large number of harmful filamentous algae. They must be removed by a lot of manpower, which is time-consuming and laborious, and increases the cost of breeding; and a large amount of drugs also destroys the micro-ecological balance in the pond. , the organic matter cannot be effectively decomposed and deposited at the bottom of the pond, the material circulation is hindered, the dissolved oxygen decreases, the toxic substances increase, the water quality and the bottom quality deteriorate; the water exchange of large-scale drainage and irrigation will increase the pollution of the breeding sea area, the eutrophication is serious, and the self-purification ability of the sea area is reduced. , eventually leading to frequent red tides and the spread of the disease;

[0005] 3. A variety of marine nematodes, small crustaceans, fish, snails or bivalve molluscs often naturally multiply in sea cucumber ponds. Because the ecosystem is not perfect, their number sometimes increases sharply, not only competing with sea cucumbers for food and space, but also dying. Dead bodies will also spoil the water quality and breed a large number of pathogens;

[0006] 4. From June to September when the water temperature rises, sea cucumbers hide in artificial reef piles and other attachment bases for aestivation, and the entire pond is therefore in an "idle" state. Today, with the soaring cost of coastal land, the low utilization rate of ponds directly affects Farmer's profit

However, there are still no systematic research reports on a series of issues such as the suitable species of polyculture, stocking ratio and how to manage them.

If polyculture species are introduced blindly, and the feeding and management work is not perfect, it may cause the existing ecological system of the pond to become unbalanced, and a large number of animal carcasses, feces and residual bait will increase the load on the water body, causing the water quality and the environment at the bottom of the pond to deteriorate further.

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