Self-exposure floating raft, rowed nori culture device and self-exposure method

Abstract

The invention discloses a stormy wave resistant self-exposure floating raft and a deep-sea load carrying type rowed nori culture device, and belongs to the technical field of nori culture. The stormywave resistant self-exposure floating raft comprises a hollow carrying rod and a floating rod, wherein the top end of the hollow carrying rod and the middle of the floating rod are vertically and fixedly connected through a connecting piece, the hollow carrying rod is sleeved with a float, a diagonal rope is connected between the float and the floating rod, and an exposure root cable for carryingthe floating rod is arranged in the hollow carrying rod along the axis. The invention also discloses the rowed nori culture device and a self-exposure method. Self-exposure and self-falling of a culture web curtain are realized by fully using tidal range, the labor intensity is reduced, and the nori quality is improved; the arranged diagonal rope improves the balance of the hollow carrying rod, anarranged cross fastener can prevent the floating rod from sliding during exposure; and self-exposure of the nori culture web curtain is realized by fully using natural tides, the culture cost is reduced, mechanical harvesting is realized, and the self-exposure floating raft can be applied to deep-sea and open-sea culture.

Description

technical field [0001] The invention relates to a seaweed cultivation technology, in particular to a wind and wave-resistant self-drying floating raft, a deep-sea carry-carrying row laver cultivation device and a row self-drying method. Background technique [0002] With the increasingly serious pollution of the offshore sea area, the growing density of aquaculture, the shortage of nutrients, and the increasing number of seaweed blight diseases, it is difficult to continue offshore aquaculture. From the semi-floating seaweed culture in the intertidal zone, it has developed to the plug-type seaweed culture; from the 7-8 meters of the poles used at the beginning to the current 22-25 meters, the breeding area must be advanced to the deep sea and the open sea every year. However, the length and strength of the strut must be limited, and it can no longer be used in deeper sea areas. [0003] At this stage, the methods that can be used for deep-sea culture of seaweed include flip...

AI Technical Summary

Problems solved by technology

However, the length and strength of the struts must be limited, which cannot meet the needs of deeper sea areas.

[0003] At present, the methods that can be used for deep-sea cultivation of laver include the flip-type dry-dew culture method, the tripod-type dry-dew culture method and the "U"-shaped tube-type dry-dew culture method, and these methods have the following defects: First, the above-mentioned The methods all need to be manually operated, the labor intensity is very high, and the operation at sea is difficult. The time of dew drying is artificially controlled, and it is difficult to grasp it in time, which greatly affects the normal growth of laver. Second, the wind and wave resistance is poor. method, when the wind and waves are strong, it is easy to deform and become unstable; thirdly, the dew is not thorough, the height from the water surface is low during dew, and the water foam blown by the sea breeze drenched on the net curtain affects the dew effect, and cannot completely remove green algae, diatoms, etc. Miscellaneous algae reduces the quality of laver and reduces the yield of laver; fourth, mechanized vegetable harvesting cannot be carried out, and the efficiency is low

In the above methods of laver cultivation, the vegetable picking boats cannot enter under the net curtain to harvest laver, which is blocked by the raft frame, and manual harvesting is required, which consumes a lot of labor and has low efficiency.

At the same time, it is difficult to control the length of laver on the net curtain after harvesting

When the vegetables are harvested next time, they will be old and tender, which will affect the quality of laver; fifth, when drying the dew manually, the laver on the net curtain needs to be separated from the water surface at one time, the load is heavy, the operation process is complicated, the cost is high, and the yield of laver is low; Sixth, when the dry dew is manually operated, the left and right loads of the device are asymmetrical and unstable

Images