Seedling cultivation method for sea-tangle

A technology of kelp and light intensity, applied in the fields of botanical equipment and methods, seaweed cultivation, horticulture, etc., can solve the problems of time-consuming, laborious, high cost, and difficult to control, so as to reduce high cost, ensure healthy growth, and be easy to select and control. Effect

Inactive Publication Date: 2009-08-12
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

However, this traditional seedling raising method has the following disadvantages: on the one hand, in order to prevent the occurrence of diseases, the water temperature during the entire seedling raising period of the sporophyte needs to be controlled below 9°C, which is more than 10°C lower than the natural water temperature at sea, and the cost for cooling very high
Since the lighting conditions of natural light have daily cycle changes and are also affected by weather conditions, different measures need to be taken to adjust in time during the seedling raising process, and sometimes it is difficult to control, which is very time-consuming and laborious

Method used

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  • Seedling cultivation method for sea-tangle
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  • Seedling cultivation method for sea-tangle

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: Said embodiment kelp seedling cultivation is carried out in a water tank, and the temperature of the water body in the water tank is controlled at several degrees Celsius. Brown ropes are evenly laid on the bottom of the water tank, and a submersible pump is placed inside the water tank to make the water in the water tank flow. A white LED light, a blue LED light and a red LED light are arranged on the top of the water tank as light sources of white light, blue light and red light respectively. Among them, the layout diagram of the white LED lights is as follows: figure 1 As shown, there are 5 LED lights in each group. The layout diagram of blue LED light and red LED light is as follows: figure 2 As shown, each group has 9 LED lights, and the photoperiod of each light quality is 8h light (L) / 16h dark (D). The whole seedling period includes the following four stages:

[0027] a1. Collect zoospores, first irradiate and cultivate them with white light wi...

Embodiment 2

[0032]Embodiment 2: The equipment used in this embodiment is the same as that of Embodiment 1, the difference is that the temperature of the water body in the water tank of this embodiment is controlled at 13°C.

[0033] The whole seedling period includes the following four stages:

[0034] a2. Collect zoospores, first irradiate and cultivate them with white light with an illumination intensity of 15001x for 12 days, and the zoospores form gametophytes. At this time, a small amount of female gametophytes may ovulate to form microsporophytes.

[0035] b2, then use blue light with an illumination intensity of 30001x to cultivate, cultivate for 4 days, and more than 95% of the female gametophytes ovulate to form microspores; continue to cultivate with blue light for another 11 days, and the average size of the microspores is 456um in length and 98um in width.

[0036] c2. In order to slow down the growth of microspores and reduce the occurrence of diseases, after 15 days of culti...

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Abstract

The present invention discloses a seedling cultivation method of sea tangle, wherein the method comprises the following steps: a. cultivating the collected zoospores under the white radiation irradiation with a certain illumination intensity for forming gametophyte; b. cultivating the gametophyte with the blue light illumination with a certain illumination intensity for converting the gametophyte to micro sporinite; c. growing the micro sporinite under the red light illumination with a certain illumination intensity for a certain period of time; and d. cultivating the sporinite under blue light illumination with a certain illumination intensity so that the sporinite obtains the dimension required for stored cargo delivery. The healthy growing of sporinite can be guaranteed under a higher temperature through adopting the combination irradiation with various light qualities for executing seedling cultivation of sea tangle. The method is simple for applying and the seedling cultivation cost is low.

Description

technical field [0001] The invention relates to a method for raising kelp seedlings, in particular to a method for raising kelp seedlings by using combined light quality, and belongs to the technical field of aquaculture. Background technique [0002] Kelp is one of the first species of macroalgae to be cultured artificially. According to historical documents, kelp is not a native species of our country. It was only introduced to China from Japan in the late 1920s. At that time, it was mainly distributed along the coast of Dalian, Liaoning. Because the sea area environment is suitable for the growth of kelp, by 1949, the local natural annual output of kelp Reached 80.6 tons (dry product). However, compared with the domestic market demand, it is still a drop in the bucket, mainly relying on imports from North Korea and Japan. After 1949, Chinese phycologists began research on the commercial cultivation of kelp. In the 1950s, natural light and low-temperature flowing water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G33/00
Inventor 汪文俊王飞久孙修涛
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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