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Method for culturing phytoplankton with predominant chlorophyta

A technology of phytoplankton and green algae, which is applied in the field of phytoplankton cultivation, can solve the problems of water pollution by side effects and high cost, and achieve the effect of rich components, low cost and simple preparation method

Inactive Publication Date: 2013-09-04
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for cultivating phytoplankton dominant in Chlorophyta, which solves the current disadvantages of the high cost of controlling the dominant species of phytoplankton in natural water bodies and the possible defects of side effects polluting water bodies

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  • Method for culturing phytoplankton with predominant chlorophyta
  • Method for culturing phytoplankton with predominant chlorophyta

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preparation example Construction

[0031] The preparation of the culture solution in the present invention adopts the method of carrying out natural fermentation to aquatic plants, does not need to consume additional energy, and does not need to add chemical reagents, and material is environmental protection, and process is simple; The needs of algae phytoplankton are relatively close, and the ratio of nitrogen and phosphorus does not need to be adjusted; the culture medium after fermentation contains trace elements, small molecular peptides, sugars, vitamins, etc. required for the growth of phytoplankton, which can meet the growth needs of phytoplankton; the culture medium after fermentation There is a lot of organic matter in the medium, and zooplankton often reproduce very slowly in it, so the biomass of zooplankton is not large, so the selective predation pressure of zooplankton on phytoplankton is very small, which is conducive to the competition of phytoplankton in the phytoplankton of Chlorophyta. gain an...

Embodiment 1

[0036] This example illustrates a method for cultivating phytoplankton dominated by the genus Scenedesmus of the Chlorophyta using the rot of the submerged plant Erythrina chinensis as the culture medium.

[0037] Obtain the submerged plant Erythrina fragrans, wash and weigh about 1.5 kg, place it in about 5 kg of water to rot and ferment for more than 1 month, use a 50-mesh filter to filter out large particles in the fermentation liquid, and obtain the culture liquid.

[0038] Obtain the water body in a natural pond in late spring and early summer, use 25# plankton net to filter out the large zooplankton and larger individual phytoplankton in the obtained water body, and check under the microscope to find that the phytoplankton in the filtered water body is dominant The species is Scenedesmus genus of Chlorophyta. Place the filtered water in three 10L colorless transparent glass bottles, each with a volume of 10L, as three parallel treatments, add the above culture solution f...

Embodiment 2

[0040] This example illustrates a method for cultivating phytoplankton dominated by the genus Cellulophyta of the Chlorophyta using the rotting matter of the floating plant duckweed as a culture medium.

[0041] Obtain the floating leaf plant Duckweed, wash and weigh about 1kg, place it in about 3kg of water to rot and ferment for more than 1 month, use a 50-mesh filter to filter out large particles in the fermentation broth, and obtain the culture broth.

[0042]Obtain the water body in a natural ornamental fish pond in late spring and early summer, use the 25# plankton net to filter out the large zooplankton and larger individual phytoplankton in the obtained water body, and check under the microscope to find the phytoplankton in the filtered water body The dominant species is Cellulophyta of Chlorophyta. Place the filtered water in three 5L colorless transparent glass bottles, each with a volume of 5L, as three parallel treatments, add the above culture solution for cultiva...

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Abstract

The invention relates to a culture method for phytoplankton, belonging to the field of breeding. The invention discloses a method for culturing phytoplankton with predominant chlorophyta, comprising the following steps of: (1) producing culture solution, namely selecting cleaned aquatic plants with low cellulose content at first, and then adding a proper amount of water in the aquatic plants and placing the aquatic plants in a light-tight and warm environment to rot and ferment, and finally filtering the rotted and fermented solution of the aquatic plants to obtain the culture solution rich in nutrient elements such as nitrogen and phosphorus; (2) obtaining a natural eutrophic water body in late spring and early summer; (3) filtering large zooplankton and large individuals of phytoplankton in the obtained water body by a 200-mesh plankton mesh; (4) adding the culture solution produced in the step 1 in the water body filtered by the plankton mesh; and (5) culturing the culture water body with the culture solution in a transparent glass bottle at natural temperature under natural light, thus obtaining phytoplankton with predominant chlorophyta.

Description

technical field [0001] The invention relates to a method for cultivating phytoplankton, in particular to a method for cultivating phytoplankton dominated by Chlorophyta. Background technique [0002] Both Chlorophyta and Cyanophyta phytoplankton may become the dominant species in natural water bodies, but for aquaculture ponds, people hope that Chlorophyta phytoplankton, which are beneficial to the cultured objects in the aquaculture pond, can occupy the dominant species in the water body, so there have been There are some control methods for the dominant species of phytoplankton in natural water bodies, but these existing methods are relatively complicated, and for the entire water body and its surrounding microenvironment, there are many control steps involved, or better mechanical equipment is required to assist in the control. Or it is necessary to add chemical reagents that may have side effects on the water body, and phytoplankton culture is seldom used for phytoplankt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G33/00C12N1/12
CPCY02A40/80
Inventor 王小冬刘兴国时旭
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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