A kind of high-efficiency portunus trituberculatus seed transportation method

Abstract

A high-efficiency transport method for portunus trituberculatus seedlings belongs to the technical field of portunus trituberculatus cultivation, and comprises the following steps: (1) seedling selection: taking the dose of 10.79 of the low-salt semi-lethal concentration of young crabs in the I stage for 72 hours, randomly selecting I For juvenile crabs in the salinity stress experiment, the survival rate was counted after 72 hours, and the juvenile crabs in the second stage in the nursery pond with a survival rate of more than 50% were selected as the seedlings for transportation; (2) transportation method: first soak and drain wheat husks with II Crab juveniles are evenly mixed according to the weight ratio of 1:1, the mixture is put into the seed bag, then oxygen is filled into the seed bag, the bag mouth is tied tightly with a rubber band, and the seed bag is put into the foam box, and finally Put the biological ice bag into the foam box, and seal the foam box with adhesive tape; the present invention enables the seedlings to be transported continuously for 10-12 hours, the transportation survival rate is 98.5%, and the damage rate of young crabs is 1.2%, which ensures the survival of seedling breeding Rate.

Description

technical field [0001] The invention belongs to the technical field of portunus trituberculatus cultivation, and in particular relates to a method for transporting portunus trituberculatus seedlings with high efficiency. Background technique [0002] Swimming crab (Portunus trituberculatus) is an important marine economic animal. Because of its fast growth, large body and delicious meat, it is deeply loved by the masses and has high economic value. Therefore, it is gradually developed as a breeding object. At present, the breeding area is 500,000 mu, and the output reaches 100,000 tons. It has become one of the leading species of marine farming in my country. At present, 1.5 billion Portunus trituberculatus seedlings are needed for breeding every year, but due to seedling quality or transportation problems, the aquaculture output is reduced or completely eliminated. The reason lies in (1) Seed selection: At present, it mainly relies on naked eye observation and selects high...

AI Technical Summary

Problems solved by technology

[0003] In view of the inaccurate selection of Portunus trituberculatus seedlings in the prior art, self-mutilation during transportation, hypoxia, etc., which lead to low survival rates in transportation and cultivation, the present invention provides a high-efficiency transport method for Portunus trituberculatus seedlings. The present invention uses 10.79 Salinity, under the stress of young crabs, select the second-stage young crabs in the nursery pond with a survival rate of more than 50% as seedlings; mix equal amounts of wet wheat husks with seedlings to reduce self-mutilation; oxygenate the seedling bags to ensure long-distance transportation There is no lack of oxygen; the foam box is filled with biological ice to reduce the temperature in the box; the seedling transportation time can be continued for 10-12 hours, the transportation survival rate is 98.5%, and the young crab damage rate is 1.2%, which ensures the seedling transportation and breeding survival It solves the problems of inaccurate seed selection, serious damage, low survival rate and high transportation cost in the prior art.

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