Water changing method for culturing auricularia of stichopus japonicus

Abstract

The invention relates to a water changing method for culturing auricularia of stichopus japonicus, and belongs to the technical field of artificial culturing and water changing methods of stichopus japonicus. The method comprises the following steps of 1), water changing in the earlier stage, wherein in the earlier stage, water is only added but not drained, specifically, water which accounts for1 / 3-1 / 2 of the volume of a culture pond 1 is added into the culture pond 1 on the day when the auricularia is put into the pond, and afterwards, water which accounts for 1 / 10 of the volume of the culture pond 1 is added into the culture pond 1 every day until the culture pond 1 is filled up; 2), water changing in the later stage, wherein after the culture pond 1 is filled up, water needs to be changed every day, before water changing, the auricularia needs to sufficiently float upwards at first, after the auricularia sufficiently floats upwards, bottom water with poor water quality is drainedfrom the bottom of the pond, meanwhile, residual feeds, feces, dead and inferior auricularia and other sundries settled at the bottom of the pond are discharged out of the pond, when the discharged water accounts for 1 / 5-1 / 3 of the volume of the culture pond or the upward-floating auricularia has the sign of diffusing, water draining is stopped, the culture pond is filled with new water until theculture pond is filled up, when 5-10% of the auricularia in the culture pond is metamorphosed into doliolarias, a substratum is put, and then water changing in the later stage is finished. The water changing method has the advantages that the water changing effect is good, the water changing efficiency is high, the labor intensity is lowered, the auricularia is prevented from being injured, crossinfection of diseases is prevented, run-off of the auricularia is reduced, and the culturing cost is lowered.

Description

technical field [0001] The invention relates to a water changing method for cultivating sea cucumber auricularia larvae, and belongs to the technical field of water changing methods for artificial seedling cultivation of sea cucumbers. Background technique [0002] At present, for the water change in the cultivation stage of the ear-shaped larvae in the process of artificial seedling cultivation of sea cucumbers, two methods of water change are mainly used: net cage water change and water only without drainage. The specific process and existing problems of the two existing water change methods are as follows Insufficient specific description: [0003] 1. Change the water in the cage [0004] Plastic tubes with a diameter of about 1-1.5cm or metal tubes or iron bars covered with plastic films are used to make a cuboid frame. The bottom is sealed with a 200-mesh sieve to make a cage. When changing the water, stand the net cage on the side of the sewer in the cultivation poo...

AI Technical Summary

Problems solved by technology

[0008] 2) Slow water change

[0010] 3) High labor intensity and labor

[0012] 4) Larvae are vulnerable

[0014] 5), larvae are easy to leak

[0015] The sieve on the net cage is easy to be damaged during stirring water, cleaning and moving, causing larvae to leak out

[0016] 6) Easy to spread diseases

In the early stage of larvae cultivation, due to less feeding and excrement, good water quality can still be maintained, but in the later stage of cultivation, as the amount of feeding and larval metabolites increase, the residual bait, feces, dead and poor quality deposited on the bottom of the pond The larvae and other sundries increase, this method can no longer effectively improve the pool water environment, and it also brings hidden dangers to the deterioration of the water quality after the substrate is deposited, because the pond will start to pour after 1 to 2 months after the substrate is deposited, during which time the bottom of the pond will deposit A large amount of sundries can easily lead to deterioration of the pool water environment

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