Short-term cold storage method of porphyra yezoensis cultivation net curtain

A technology of striped seaweed and net curtains, applied in cultivation, plant cultivation, seaweed cultivation and other directions, can solve the problems of being easily affected by the environment and the inability of effective protection of seaweed seedlings, so as to shorten the cultivation time, avoid bad environment and Disease and risk reduction effects

Inactive Publication Date: 2010-07-28
SHANGHAI OCEAN UNIV
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AI Technical Summary

Problems solved by technology

After the ascospore net curtain is out of the warehouse, it needs to go through the process of the ascospores germinating into laver seedlings. The process is easily affe

Method used

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Experimental program
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Embodiment 1

[0019] Firstly, the Porphyra variegata seedling nets are cultivated, and the ascospore seedlings are collected from mid-September to mid-October. The attached seedling density is 200 mesh sieve silk 15-25 conchospores / mm 2 , or 30-50 conchospores / cm in scattered mesh wires. Semi-floating rafts are used to hang the seedlings closely, and it is advisable to dry the dew for 4-5 hours during the spring tide. After setting up the net, inspect and manage daily, and the net curtain must not be too loose or drop.

[0020] Then cultivate the preparations for the net curtain before storage. The storage time should be selected before the occurrence of diseases or algae. Generally, it is from late October to early November. If the water temperature in the sea area rises or diseases occur during the cultivation process, the nets can be untied and dried as soon as possible. When removing the net, the seedling net with uniform seedling emergence and strong algal body should be selected fo...

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Abstract

The invention provides a short-term cold storage method of a porphyra yezoensis cultivation net curtain, which comprises the following steps that: (1) the net curtain after porphyra yezoensis conchospore is seedling collected adopts a semi-floating raft to closely link and emerge the seedling; (2) the net is immediately disassembled before disease and mixed algae appear or when the disease and the mixed algae appear, the seedling net with uniform seedling emergence and strong frond is selected to be dried until the moisture content is 20 to 40 percent, florescence appears on the frond, and the frond has elasticity being pulled by hand; and (3) and then the net curtain is warehoused and cold stored to be used for the cultivation. The method has the advantages that: when unfavorable situations such as increasing of water temperature, disease and the like are discovered during the cultivation process, seedling net in the cultivation can be cold stored for a short term with the method so as to prevent the unfavorable situation of the sea area.

Description

technical field [0001] The invention relates to a method for short-term cold storage of net curtains for cultivating Porphyra variegata. Background technique [0002] Porphyra yezoensis is the main species of laver artificially cultivated in the sea area north of the Yangtze River in my country, and it is also the main cultivated species in Japan and Korea. Porphyra is currently the cultivated seaweed with the highest output value. However, due to the continuous expansion of production scale and excessive close planting, coupled with the pollution of the cultivation sea area environment, diseases such as chrysalis, red rot, and green spot have occurred frequently. The high-quality, high-yield and stable yield of seaweed have brought obstacles and restricted the development of laver cultivation industry. At present, there is still a lack of effective preventive measures for the main diseases of Porphyra zebra. [0003] Existing laver refrigerated net patented technology is ...

Claims

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Application Information

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IPC IPC(8): A01G33/02
Inventor 马家海李宇航张礼明吉传礼袁明陈胜贵王汉清沈旺沈怀舜孙国铭顾善邦沙锦荣陈昌钰
Owner SHANGHAI OCEAN UNIV
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