High-efficiency portunus trituberculatus seedling conveying method

Abstract

The invention provides a high-efficiency portunus trituberculatus seedling conveying method, and belongs to the technical field of cultivation of portunus trituberculatus. The high-efficiency portunus trituberculatus seedling conveying method comprises the following steps of (1) seedling selection: randomly selecting a first stage of juvenile portunus trituberculatus from a nursery pond by using 72-hour low-salt medial lethal concentration 10.79 of the first stage of the juvenile portunus trituberculatus as dosage, performing a salinity stress experiment, calculating the survival rate after 72 hours, and selecting a second stage of juvenile portunus trituberculatus in a nursery pond with the survival rate higher than 50% as conveying seedlings; and (2) a conveying method: uniformly mixing wheat shells which are soaked and then are drained off and the second stage of the juvenile portunus trituberculatus according to the weight ratio of 1:1 at first, placing the mixture in a seedling bag, inflating oxygen in the seedling bag, binding the opening of the bag by using a rubber band, placing the seedling bag in a bubble chamber, finally, placing biological ice bags in the bubble chamber, and sealing the bubble chamber by using adhesive tapes. By the high-efficiency portunus trituberculatus seedling conveying method, the seedling conveying time can be 10-12 hours, the conveying yield reaches 98.5%, the damage rate of the juvenile portunus trituberculatus reaches 1.2%, and the seedling cultivation survival rate is guaranteed.

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] 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-quality seed ba...

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.

Images