A kind of intermediary breeding method of seedling-type Hong Kong oyster

Abstract

The invention discloses a seedling clamping type crassostrea hongkongensis middle incubation method. The method comprises the following steps that (1) seedling clamping ropes are manufactured, wherein plastic ropes are cut, the length of the plastic ropes is 1.8-3 m, the diameter of the plastic ropes is 1.5-2.4 cm, each plastic rope is formed by two small ropes in a twisting mode, twist knots are arranged on the plastic ropes every 1.0-1.5 cm, the two ends of the plastic ropes are knotted, a 0.2-0.5 kg cement block is fixed at the tail end of each plastic rope to be used as a counterweight block, and manufacturing of the seedling clamping ropes is completed; (2) seedlings are clamped, wherein when young shells on a sheet-shaped plastic attaching piece are 2-10 mm in height, the twist knots in the step (1) are twisted off, fixing bases are clamped in the twist knots and fixed, and each seedling clamping rope is fixedly provided with 10-15 fixing bases; (3) middle incubation is conducted, wherein each seedling clamping rope with seedlings well clamped in the step (2) is placed in an ecological soil pool or a natural sea area, and the seedling clamping ropes are hung on a floating object for conducting middle incubation. The seedling clamping type crassostrea hongkongensis middle incubation method has the advantages that operation is convenient, time and labor are saved, the corrosion resistance capacity is high, the yield is large, and the benefits are high.

Description

technical field [0001] The invention belongs to the technical field of shellfish culture in modern marine agriculture, and in particular relates to a new method for intermediate breeding of Hong Kong oysters with seedlings. Background technique [0002] From the perspective of salinity adaptability, my country's giant oysters can be divided into two categories, one is long oysters and Portuguese oysters adapted to pure seawater environments; the other is Hong Kong oysters and oysters adapted to brackish water environments. Omi oysters, Kumamoto oysters. For the Hong Kong oyster Crassostrea hongkongensis, the environment for growing and growing in the middle is relatively special, and they are all located in the estuary area (brackish water) where the conditions change rapidly. The place is more ideal; this is completely different from long oysters, Portuguese oysters, etc., which can use shells as a fixation base to grow and culture in high-salinity pure seawater areas, beca...

AI Technical Summary

Problems solved by technology

[0003] Hong Kong oysters have a breeding history of nearly a thousand years in Guangdong, Guangxi, Hong Kong, Macao and other regions of my country. In the past, the seedlings of this industry all came from natural seedlings, and all of them used disposable cement cakes (blocks) for intermediate breeding. Although the cement cakes It has corrosion resistance, but it is too heavy and requires a lot of labor costs; and the cement has a certain poisonous effect, the viability of seedlings is significantly reduced, and the intermediate breeding effect is often poor