An outdoor roller-type method for collecting seedlings of Porphyra zebra spores

Abstract

The invention discloses an outdoor roller type porphyra yezoensis conchospore seedling collecting method. In the conchospore seedling collecting season, the water temperature of a porphyra yezoensis seedling growing chamber is controlled to be higher than 24 DEG C, and the indoor light is controlled to be smaller than 200 lux. Conchospore collection can be carried out when the seawater temperature is controlled to be 19+ / -1 DEG C, the outdoor temperature is controlled to be 23+ / -0.5 DEG C and the seedling collecting light strength is higher than 3000 LUX. Flowing of seedling collecting water is controlled through a seedling collecting waterwheel, and the porphyra yezoensis conchospore seedling collecting way is automatized. The conchospore spreading and attachment rate is improved, conchospore waste is reduced, a net curtain can collect seedlings evenly and can enter sea in time, the labor cost is reduced, and the porphyra yezoensis seedling growing cost is lowered.

Description

technical field [0001] The invention relates to a laver cultivation technology, in particular to an outdoor roller-type method for collecting conchospores of porphyra zebra zebra seedlings. Background technique [0002] Porphyra is an important economically cultivated species among seaweeds, especially Porphyra variegata is the most beautiful one in Porphyra. Although the proportion of seaweed in the world's aquatic products is relatively small, and the scope of cultivation is not wide, it is popular with consumers for its delicious taste, high nutritional value, and easy portability. Among aquatic products, it is an important product for foreign exchange earning through export. [0003] Seaweed is one of the most important artificially cultivated seaweeds in the world. It is a natural healthy food with a huge market. It accounts for 2 / 3 of the output value of artificially cultivated seaweed in the world. Japan has the highest production of seaweed, followed by South Kore...

AI Technical Summary

Problems solved by technology

[0005] At the present stage, there are many problems in collecting seedlings of P.

[0006] First, artificial flushing causes the uneven attachment of conchospores attached to the net curtain, resulting in a large amount of conchospore waste, delaying the ascospore seedling harvesting season, and causing huge losses to the cultivation of Porphyra variegata

Artificial flushing is impossible to be uniform. Some places are flushed a lot, and some places are hardly flushed, which causes two losses. On the one hand, the places that are not flushed in time or rarely flushed, most of the shells The scattered conchospores are wasted in vain. On the other hand, because the net curtain goes out of the pond, the amount of conchospore attachment in each place of the net curtain must reach a certain density. According to such requirements, even if the total amount of seedlings on the net curtain is a lot, the net curtain will Can't go out pond, like this, just cause a large amount of ascospore wastes, delay the ascospore picking seedling season, have caused huge loss to Porphyra zebra cultivation

[0007] Second, the shells are often broken and the conchospores are lost.

In order to increase the effect of picking seedlings, they basically walk in the laver nursery ponds. As a result, a large number of filamentous shells are crushed, and some become powdery; Body shell fragments are washed out of the pool with the water. In addition, when shells are cleaned, most of the small filamentous shell fragments have a seedling side and stick to the bottom of the pool. Even if a large number of shells stick to the bottom of the pool are released, they can enter There are very few conchospores in contact with the water body and the aquaculture net curtain, which invisibly causes a large amount of waste of conchospores, which delays the time of entering the sea of ​​the net curtain to a certain extent

[0008] Third, the traditional method of collecting conchospores in Porphyra zebra indoors cannot imitate the temperature changes and light changes required for the release and attachment of Porphyra zebra conchospores in a natural state. As a result, a large number of available conchospores are wasted, and a large number of seaweed cultivation nets cannot be sent to the sea in time.

[0009] To sum up, the current indoor manual flushing of seedlings increases the cost of seedling cultivation, wastes a large amount of Porphyra zebra spores, cannot fully meet the conditions for the release and attachment of Porphyra zebra spores, and delays the time for net curtains to enter the sea. It has caused immeasurable losses to sea culture of Porphyra zebra fronds, and so on, how to solve the problem of artificial ascospore flushing and picking seedlings is a problem that needs to be solved in artificial seedling cultivation of Porphyra zebra at this stage