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Summering cultivation method for seedlings of Hizikia fusiform (Harv)Okamura juvenile sporophytes

A cultivation method and young sporophyte technology, applied in the field of aquaculture, can solve problems such as the cultivation of young sporophyte seedlings with poor transparency in summer, and achieve the effects of overcoming unfavorable sea conditions, good effect, and avoiding high energy consumption.

Inactive Publication Date: 2011-10-26
ZHEJIANG MARICULTURE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] However, in sea areas where Hijiki is cultivated, due to unfavorable conditions such as high temperature, poor transparency, sediment deposition, and abundant marine zooplankton feeding on Hijiki seedlings, it is not suitable for the cultivation of young sporophyte seedlings in summer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ① Collect fertilized eggs in the breeding sea area of ​​Dongtou, store and transfer them to the seedling pond in Moxie Island, Shandong, attach the fertilized eggs to the seedling rope or cloth curtain, and cultivate the seedlings in the indoor cultivation pond for 3-10 days to develop into young spores Body, 0.1-0.5 mm to the seedling, moved to the sea area 5 nautical miles southeast of Moxie Island;

[0028] ② Cultivation facilities and recycling;

[0029] Considering the favorable conditions of the sea area and the low biomass of hijiki seedlings, overlapping methods can be adopted to reduce the utilization intensity and management difficulty of the breeding sea area, which will improve the benefits. The joint method of hanging in series is to connect two adjacent seedling ropes with equal-length small ropes to form a hanging structure in series. It is advisable to connect 2-4 seedling ropes to form a planar hanging structure;

[0030] Adopt the anti-wind and wave d...

Embodiment 2

[0035] ① Collect the young sporophytes on the reproductive receptacles of mature Hijiki in the breeding sea area of ​​Dongtou, attach the young sporophytes to the seedling rope or cloth curtain, and cultivate them as seedlings. The distance between two adjacent young sporophytes is 3- 6 cm, first grow seedlings in indoor cultivation ponds for 3-15 days, until the regenerated seedlings are 0.1-0.5 mm, they are stored and transported to the sea area of ​​Sanggou Bay, Shandong;

[0036] ② Use conjoined rectangular parallelepiped rafts, hanging method: connect two adjacent seedling ropes with equal-length small ropes to form a series hanging structure. It is advisable to use 2-4 seedling ropes; in a certain water layer In the rectangular raft frame formed, the length of the long frame is not less than twice the length of the wide frame, and an even number of cables is arranged between the two wide frames, and the distance between two adjacent cables is 1-3 meters. The above-mention...

Embodiment 3

[0042] ① In the breeding sea area of ​​Dongtou, rhizoids were preserved by clipping method, and regenerated seedlings were cultivated. The rhizomes are required to be tightly wound on the culture substrate with a spacing of 3-6 cm. Generally, algal bodies that are healthy, non-rotten, normal in color, and growing well are selected as the objects of cultivation. Through preservation and transshipment to the sea area 5-10 kilometers south of Bangchui Island, Dalian, Liaoning;

[0043] ② Raft structure and efficient utilization;

[0044] The joint method of hanging in series is adopted, and the two adjacent seedling ropes are connected with small ropes of equal length to form a structure of hanging in series. the nurturing structure;

[0045] Adopt the anti-wind and wave design method, and align the direction of the raft structure with the usual wind and waves. If the wind and waves are particularly strong, fences can be set around the periphery to reduce the losses caused by ...

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Abstract

The invention discloses a summering cultivation method for seedlings of Hizikia fusiform (Harv)Okamura juvenile sporophytes, comprising the following steps: raising seedlings in a north sea area at a high latitude during the high temperature stage; and transferring the cultivated seedlings to a south cultivation sea area at a low latitude after summering for cultivation. In the invention, seedling raising and cultivation are performed in different levels and sea areas, thus overcoming the disadvantageous sea conditions in cultivation sea areas, and avoiding high energy consumption in an indoor temperature-reduction cultivation mode.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a technology for summer-surviving hijiki seedlings, in particular to a method for summer-summer cultivation of hijiki young sporophyte seedlings. Background technique [0002] Hijiki Hizikia fusiforme (Harv)Okamura belongs to Phaeophyta, Cyclospreae, Fucales, Sargassaceae, Sargassaceae, Hijiki Hizikia , and the only species of this genus. Hijiki is an important foreign exchange-earning economic seaweed in the coastal areas of the East my country Sea, with a breeding area of ​​nearly 1,000 hectares, an output of 8,700 tons, and an output value of 100 million yuan. [0003] Hijiki is a perennial economic seaweed, and the seedlings needed for traditional culture mainly come from natural populations growing in the intertidal zone. The roots need to be scooped up when collecting, which affects the conditions for the original rhizomes to continue to survive, result...

Claims

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Application Information

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IPC IPC(8): A01G33/00A01H13/00
Inventor 林少珍骆其君张立宁谢起浪边平江张鹏
Owner ZHEJIANG MARICULTURE RES INST
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