Large-specification cultivation method of sargassum thunbergii seedlings for proliferation in nursery of kelp bed

Abstract

The invention discloses a large-specification cultivation method of sargassum thunbergii seedlings for proliferation in a nursery of a kelp bed. The method comprises the following steps: (1) putting algal reef to which sargassum thunbergii seedlings are attached in the nursery of the kelp bed; (2) promoting robustness of the sargassum thunbergii seedlings in the nursery: a, adjusting nutritional salt: supplementing phosphorus nutritional salt in an impound water area in the nursery in a low astronomical spring tide period; b, controlling distributing density: uniformly distributing algal reefin the nursery, and controlling the separation distance of the algal reef at 5-10 cm; and c, thinning periodically: keeping the density of the sargassum thunbergii seedlings on the algal reef at 3-5/cm<2>; and (3) discharging the sargassum thunbergii seedlings out of the nursery in batches by way of selecting the algal reef for proliferation and supplementing the algal reef. In the process of constructing the kelp bed in the intertidal zone manually, nursery construction can be used for producing large-specification seedlings for proliferation in a centralized manner efficiently, so that the stable and sufficient seedling supply for proliferation is achieved to meet the demand on large-specification seedlings for proliferation in the kelp bed construction process, so that construction of the kelp bed is supported.

Description

technical field [0001] The invention belongs to the technical field of seaweed farm construction in the intertidal zone, and in particular relates to a method for cultivating large-scale sargassum seedlings for multiplication in a seaweed farm nursery. Background technique [0002] The seaweed field is a kind of coastal marine ecosystem composed of large brown algae and other marine biomes that grow on the hard bottom of the continental shelf in the cold temperate zone. The large seaweed field is the restorer and stabilizer of the marine ecological environment. A natural algae field is a luxuriant seagrass or seaweed community within a water depth of about 20m. The artificial seaweed farm is a dense seaweed community formed by artificially placing attachment bases to attach seaweed spores to form seedlings in suitable areas in shallow seas or inner bays, or artificially transplanting wild seaweed seedlings to promote the proliferation and growth of various large seaweeds. T...

AI Technical Summary

Problems solved by technology

The above-mentioned seaweed farm construction method is simple and easy to operate, but due to the small size of Sargassum seedlings, they are obviously affected by drastic changes in the environment, which can easily lead to a large number of seedlings falling off, resulting in poor seaweed farm construction effects, and only through the algal reef attachment substrate However, it cannot satisfy the supply of large-scale Sargassum seedlings in the process of seaweed farm construction.

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