Method for cultivating stichopus japonicus seedlings in earth-pond net cage

Abstract

The invention relates to a method for cultivating stichopus japonicus seedlings in an earth-pond net cage, which comprises the following steps of: putting a net cage, namely putting up a sunshade net at the bottom of an earth pond, and suspending the net cage; injecting water, namely injecting clean filtered seawater 15 to 20 days before the seedlings are put till the net cage emerges 30 to 40 centimeters from a water surface; putting the seedlings, namely putting the seedlings from the end of June to the beginning of July; performing the management of water quality, starting to inject fresh seawater frequently 7 to 15 days after the seedlings are put to increase the depth of the seawater, so that the depth of the seawater is between 1.8 and 2 meters in high-temperature season; performingcultivating management, namely putting sea cucumbers into the net cage with feed every day during cultivating, so that the feed is released uniformly and slowly; and replacing the net cage and pouring the seedlings once at intervals of 20 to 25 days in the early stage of cultivation, high-temperature season and the later stage of the cultivation. In the method, the feed is released to the net cage uniformly and slowly in a feeding mode of 'proper amount of much feed, proper amount of less feed and proper amount of much feed again' to ensure that the sea cucumbers can eat the feed, so the ingestion of the sea cucumbers is more uniform in time and space, the survival rate and yield of cultivating the stichopus japonicus seedlings in the earth-pond net cage are improved, the cost is reduced,and the labor strength of operating workers is relieved.

Description

technical field [0001] The invention relates to a method for cultivating japonicus seedlings in an earthen pond cage. Background technique [0002] Apostichopus japonicus has high nutritional and medicinal value, and is an important marine culture species in northern my country and a new growth point of fishery economy. With the continuous expansion of sea cucumber ponds and shallow sea culture, the artificial breeding of sea cucumbers has developed rapidly. The disorderly and rapid development of sea cucumber seedlings not only brings economic and social benefits, but also destroys the environment and resources to varying degrees. Artificial seedlings consume a lot of energy, energy shortages and rising prices of raw materials make the cost of seedlings remain high, and the profit margin continues to decline; in order to maximize profits, breeding units have high seedling density and high inbreeding rate of sea cucumbers, which reduces the space for ginseng seedlings , ma...

AI Technical Summary

Problems solved by technology

Artificial seedlings consume a lot of energy, energy shortages and rising prices of raw materials make the cost of seedlings remain high, and the profit margin continues to decline; in order to maximize profits, breeding units have high seedling density and high inbreeding rate of sea cucumbers, which reduces the space for ginseng seedlings , Malnutrition, slow growth, small body size, rampant diseases

The disorderly use of antibiotics and other chemicals in the breeding process has resulted in drug residues in the body of sea cucumbers and a decline in quality; although indoor intensive cultivation has protected the sick and weak, it has artificially reduced natural selection, reducing the viability of seedlings and the quality of sea cucumbers. Germplasm resources; indoor seedlings use a lot of water, and the water for breeding goes directly into the sea without treatment, which seriously pollutes the environment and threatens the food safety of japonicus japonicus

[0003] The cultivation of sea cucumber seedlings in earthen ponds in recent years strengthens natural selection, eliminates diseased and weak seedlings, strengthens dominant genes, improves the quality of seedlings, and protects sea cucumber germplasm resources; earthen ponds for sea cucumber seedlings do not use Chemicals improve drainage quality, reduce environmental pressure, produce green and pollution-free japonicus food, and enhance the competitiveness of commodities; earthen ponds use the original japonicus ponds or abandoned ponds, without investing huge sums of money to build seedlings It is suitable for fishermen's production and is conducive to the development of coastal fishery economy; however, the sea cucumber seedlings raised in earthen ponds are scattered, and the degree of artificial reinforcement is not mature enough, so the yield is low, and the sea cucumber seedlings produced are not easy to catch

In response to the above problems, a cultivation method of placing net cages has appeared in the cultivation of sea cucumber seedlings in earthen ponds, which are specifically divided into two kinds of sea cucumber seedling cultivation and earthen pond cage cultivation. Problems of blockage and unstable effect; earthen pond cage seedlings are mostly used as a supplement to indoor sea cucumber seedlings and a "expedient strategy" to deal with indoor surplus seedlings. The output varies from time to time, and the effect is sometimes good and sometimes bad, which is not easy to promote

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