Combination drug for selectively killing microcystis to promote growth of beneficial floating algae

A technology of Microcystis and planktonic algae, applied in biocides, biocides, plant growth regulators, etc., can solve the problem of destructive destruction of planktonic algae community structure, achieve full utilization of berberine resources, slow release of small Berberine, waste reduction effect

Active Publication Date: 2018-02-27
TIANJIN AGRICULTURE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, copper preparations, chlorine dioxide, bleaching powder and other chemical algicides commonly used in practical applications have no selective inhibitory effect on target Microcystis, that is, they can also inhibit and kill non-target algae such as green algae while killing Microcystis etc., will cause devastating damage to the phytoplankton community structure

Method used

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  • Combination drug for selectively killing microcystis to promote growth of beneficial floating algae
  • Combination drug for selectively killing microcystis to promote growth of beneficial floating algae
  • Combination drug for selectively killing microcystis to promote growth of beneficial floating algae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The algicide of the present invention has no inhibitory effect on beneficial algae and can kill Microcystis, the main component contains the following raw materials in weight ratio: 80 parts of berberine, 80 parts of gibberellin, 30 parts of β-cyclodextrin 30 parts of hydroxypropyl cyclodextrin, 20 parts of hydroxypropyl methylcellulose K4M, and 20 parts of low-substituted hydroxypropyl cellulose.

[0028] The preparation method of the algicide which has no inhibitory effect on beneficial algae and can kill Microcystis is carried out according to the following steps:

[0029] (1) Mix berberine and gibberellin in a ratio of 50 / 50 by weight and then grind them in proportion, sieve the particle size to 4.5 ± 0.5 μm, and vacuum dry for 1 hour to obtain powder A;

[0030] (2) Dissolve purified water with β-cyclodextrin and hydroxypropyl cyclodextrin at a ratio of V / W of 1000:20 (mL:g) at 40°C, and mix well to obtain solution A;

[0031] (3) At 70-90°C, dissolve the powder A...

Embodiment 2

[0038] The algicide of the present invention has no inhibitory effect on beneficial algae and can kill Microcystis, the main component contains the following raw materials in weight ratio: 90 parts of berberine, 85 parts of gibberellin, 40 parts of β-cyclodextrin 30 parts of hydroxypropyl cyclodextrin, 30 parts of hydroxypropyl methylcellulose K4M, and 30 parts of low-substituted hydroxypropyl cellulose.

[0039] The preparation method of the algicide which has no inhibitory effect on beneficial algae and can kill Microcystis is carried out according to the following steps:

[0040] (1) Mix berberine and gibberellin in a proportion of 40 / 60 by weight and then grind them evenly, sieve the particle size to 4.5 ± 0.3 μm, and vacuum-dry for 1 hour to obtain powder A;

[0041] (2) Dissolve purified water with β-cyclodextrin and hydroxypropyl cyclodextrin at a ratio of V / W of 1000:20 (mL:g) at 40°C, and mix well to obtain solution A;

[0042] (3) At 70-90°C, dissolve the powder A a...

Embodiment 3

[0049] The algicide of the present invention has no inhibitory effect on beneficial algae and can kill Microcystis, the main component contains the following raw materials in weight ratio: 85 parts of berberine, 90 parts of gibberellin, 35 parts of β-cyclodextrin Parts, Hydroxypropyl Cyclodextrin 25 parts, Hypromellose K 4 M is 10 parts, and low-substituted hydroxypropyl cellulose is 10 parts.

[0050] The preparation method of the algicide which has no inhibitory effect on beneficial algae and can kill Microcystis is carried out according to the following steps:

[0051] (1) Mix berberine and gibberellin in a ratio of 55 / 45 by weight and then grind them in proportion, sieve to a particle size of 4.5±0.3 μm, and dry in vacuum for 1 hour to obtain powder A;

[0052] (2) Dissolve purified water with β-cyclodextrin and hydroxypropyl cyclodextrin at a ratio of V / W of 1000:20 (mL:g) at 40°C, and mix well to obtain mixed solution A;

[0053] (3) At 70-90°C, dissolve the powder A a...

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Abstract

The invention discloses a combination drug for selectively killing microcystis to promote growth of beneficial floating algae. The combination drug is mainly prepared from the following raw materialsin parts by weight: 80 to 90 parts of berberine, 80 to 90 parts of gibberellin, 30 to 40 parts of beta-cyclodextrin, 20 to 30 parts of hydroxypropyl cyclodextrin, 10 to 30 parts of hydroxypropyl methylcellulose K4M and 10 to 30 parts of low-substituted hydroxypropyl cellulose. The combination drug can be prepared into a sustained release agent to accurately control the release amount of the berberine, reduce the stress response of beneficial algae, and avoid the situation that the microcystis cannot be killed completely since the microcystis form resting spores under a high-concentration condition; the gibberellin is added, so that the growth of the beneficial algae, particularly green algae is increased; killing of the microcystis can be assisted by density increase of the green algae, sothat the water body environment is unbeneficial to the burst of the microcystis.

Description

technical background [0001] With the development of the freshwater aquaculture industry, the degree of eutrophication of the aquaculture water body is increasing, and the frequent occurrence of Microcystis blooms not only directly affects the normal growth and development of the aquaculture objects, but also reduces the output and quality of the aquaculture objects. A large number of deaths bring huge economic losses to farmers. The particularity of the aquaculture water environment puts forward higher requirements for the management of Microcystis blooms in aquaculture water. [0002] As the primary producer of phytoplankton, 95% of the dissolved oxygen in aquaculture water comes from the photosynthesis of phytoplankton. Therefore, maintaining the community structure of phytoplankton is very important to optimize the quality of aquaculture water. At present, chemical algae killing is the main method for emergency control of Microcystis bloom in aquaculture water. However, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N25/10A01N43/90A01N43/12A01P13/02A01P21/00
CPCA01N25/08A01N25/10A01N43/12A01N43/90
Inventor 戴伟张树林张达娟毕相东王泽斌王雪莹李鑫孔欣
Owner TIANJIN AGRICULTURE COLLEGE
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