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Method for removing algae and enteromorpha on cultivation web curtain

A technology for breeding nets and Enteromorpha, applied in cleaning methods and utensils, cleaning methods using liquids, chemical instruments and methods, etc., can solve limiting factors such as excessive time, labor costs, affecting laver production, harvest and quality, and affecting Problems such as the growth of laver seedlings, etc., achieve the effects of short processing time, effective methods, and time and cost savings

Inactive Publication Date: 2017-10-20
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the seedling stage of laver, if Enteromorpha epiphytes on the net curtain will seriously affect the growth of laver seedlings; in the middle and later stages of cultivation, the epiphysis of Enteromorpha will affect the yield, harvest and quality of laver
For this reason, technologies and methods such as "refrigerated net" and "dry dew" have been carried out to kill the algae that compete with Porphyra zebra, but due to too many limiting factors (time, labor costs, etc.), the research progress is relatively slow
How to easily and economically remove the miscellaneous algae attached to the laver net curtain has become a difficult problem restricting the cultivation of Porphyra zebra

Method used

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  • Method for removing algae and enteromorpha on cultivation web curtain
  • Method for removing algae and enteromorpha on cultivation web curtain
  • Method for removing algae and enteromorpha on cultivation web curtain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, the hydrochloric acid solution that pH is 1.0, 2.0, 3.0 and 4.0 processes Enteromorpha and Porphyra zebra

[0042] 1. Add concentrated hydrochloric acid to natural seawater, and adjust the pH to 1.0, 2.0, 3.0 and 4.0 with a pH meter.

[0043]2. Put Enteromorpha and Porphyra zebra in good growth state in hydrochloric acid with a pH of 1.0, and use Dual-PAM to measure photosynthetic parameters. About 30s, the F of Enteromorpha algae v / F m Reduced to 0, take out the algal body and place it in natural seawater for recovery for 1 day, and its photosynthetic activity cannot be recovered. After 120s of Porphyra zebra treatment, F v / F m The photosynthetic activity of the algal body can be recovered after recovering for 1 day at this time; after treatment for 210s, F v / F m dropped to about 0.20, at this time after recovering for 1 day, the algae could not return to the normal level (see figure 1 and 2 ).

[0044] by the above figure 1 and 2 It can be ...

Embodiment 2

[0051] Embodiment 2, pH is that the sulfuric acid solution of 1.0 and phosphoric acid solution process Enteromorpha and Porphyra zebra

[0052] 1. Add concentrated sulfuric acid and concentrated phosphoric acid to natural seawater respectively, and adjust the pH to 1.0 with a pH meter.

[0053] 2. Put Enteromorpha in sulfuric acid solution and phosphoric acid solution with pH of 1.0 respectively, use Dual-PAM to measure photosynthetic parameters, and wait for the photosynthetic parameter F v / F m Take it out when it drops to 0 (about 30s), put it in natural seawater to recover, and its photosynthetic activity cannot be restored (see Figure 9 and 10 ).

[0054] by the above Figure 9 and 10 It can be seen that Enteromorpha dies after being treated with an acid (sulfuric acid or phosphoric acid) solution with a pH of 1.0 for 30 seconds.

[0055] 3. Put Porphyra zebra in sulfuric acid solution and phosphoric acid solution with a pH of 1.0 respectively, use Dual-PAM to meas...

Embodiment 3

[0057] Embodiment 3, pH is that the sulfuric acid of 2.0 and phosphoric acid solution process Enteromorpha and Porphyra zebra

[0058] 1. Add concentrated sulfuric acid and concentrated phosphoric acid to natural seawater respectively, and adjust the pH to 2.0 with a pH meter.

[0059] 2. Put Enteromorpha in sulfuric acid solution and phosphoric acid solution with a pH of 2.0, and use Dual-PAM to measure photosynthetic parameters. v / F m Take it out when it drops to 0 (about 3 minutes), and put it in natural seawater to recover for 1 day and 3 days. After the recovery treatment, the photosynthetic parameters were measured using Dual-PAM, and it was found that the photosynthetic activity of Enteromorpha could not be recovered even after 3 days in natural seawater (see Figure 13 and 14 ).

[0060] by the above Figure 13 and 14 It can be seen that Enteromorpha dies after being treated with an acid (sulfuric acid or phosphoric acid) solution with a pH of 2.0 for 3 minutes....

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Abstract

The invention belongs to the field of marine organisms, and particularly relates to a method for removing algae and enteromorpha on a porphyra yezoensis cultivation web curtain. The porphyra yezoensis cultivation web curtain with the algae and the enteromorpha is put into an acid solution to be soaked and then placed into natural seawater for recover, accordingly, the enteromorpha can be removed (dead), and growing of porphyra yezoensis is not influenced. According to the method, operation is easy, the method is effective, the yield and quality of the porphyra yezoensis can be improved, and the economic benefits of the porphyra tenera industry are increased.

Description

technical field [0001] The invention belongs to the field of marine organisms, and in particular relates to a method for removing enteromorpha algae from a net curtain for cultivating Porphyra variegata. Background technique [0002] Seaweed has important nutritional and economic value and is widely cultivated in coastal countries in Southeast Asia. In 2013, the world's laver production was about 1.8 million tons, with an output value of 1.2 billion US dollars (FAO). my country's laver industry is developing rapidly. According to the data published in the 2016 China Fishery Statistical Yearbook, the area of ​​laver cultivation in my country in 2016 was 65,766 hectares, and the aquaculture output was 115,875 tons. The north of the Yangtze River is dominated by Porphyra variegata, mainly in Jiangsu and Shandong provinces. Among them, the cultivation area of ​​laver in Jiangsu Province is about 330,000 mu, and the number of employees is about 80,000. The main production areas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B3/08A01G33/00
CPCA01G33/00B08B3/08Y02A40/80
Inventor 王广策郇丽解修俊鲁晓萍
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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