Method for controlling algal bloom of microcystis by using garlic

Abstract

The invention discloses a method for controlling microcystis bloom by using garlic, and belongs to the field of natural ecological application. The method for controlling the microcystis bloom by using the garlic comprises the following steps: uniformly planting and fixing the garlic on a foam floating bed in a matrix according to a certain density, then placing the garlic on the surface of a water body where the microcystis bloom gathers, enabling the garlic to float on the water body, and enabling the garlic root hairs to go deep into the water body, and when the garlic grows, substances for inhibiting the microcystis are released, so that the aim of controlling the algal bloom of the microcystis is fulfilled. According to the method for controlling the microcystis water bloom, the effect that the microcystis removal rate can reach 95% or above can be achieved, and the method can be used for controlling the microcystis water bloom in a natural water body.

Description

Technical Field

[0001] The invention relates to a method for controlling microcystis bloom by utilizing garlic, and belongs to the field of natural ecological application. Background Art

[0002] With the rapid economic development, the generation and discharge of a large number of pollutants have led to the increasing eutrophication of many natural water bodies, including ponds, rivers, lakes and reservoirs. Due to eutrophication, many lakes, reservoirs, ponds and rivers have experienced microcystis blooms. A large number of microcystis floating on the water surface or suspended in the water body will significantly reduce the transparency of the water body, seriously hinder the absorption and utilization of light by other phytoplankton, reduce the intensity of photosynthesis in the water environment as a whole, cause a lack of oxygen content, and lead to the death of farmed animals in the pond; at the same time, some microcystis will release algae toxins, which have potential impacts on aquatic organisms and human health, thus causing a major impact on people's social life and production.

[0003] At present, the methods for preventing and controlling microcystis blooms mainly include physical, chemical and biological methods. Physical methods include salvage (mechanical salvage and manual salvage), flocculation sedimentation, water exchange, high-pressure algaecide, ultraviolet algaecide and ultrasonic algaecide. These methods consume a lot of manpower, material and financial resources, and only treat the symptoms but not the root cause. The effect lasts for a short time, and microcystis blooms are prone to break out again. Chemical methods include chemical algaecide and oxidant algaecide. Chemical algaecide has high efficiency, but it brings secondary pollution problems, such as copper sulfate; while the oxidant algaecide using oxidants such as hydrogen peroxide is not effective for high-concentration wild microcystis. Biological methods include microbial methods, plant allelopathy, zooplankton feeding, benthic animal feeding, and fish feeding. Biological methods generally have long cycles, are greatly affected by environmental factors, and are uncontrollable. Therefore, it is urgent to find a method that is easy to operate, green and safe, and can effectively control microcystis blooms.

[0004] At present, the prior art, such as CN11351171 B - a method for emergency treatment of blue algae blooms, and CN117326648A - a method for controlling blue algae blooms in fish ponds, discloses the use of garlic juice to inhibit blue algae blooms. However, these methods actually cause the water body to emit a strong garlic odor, and the operation is not simple. Each time the blue algae treatment is carried out, a large amount of garlic juice needs to be squeezed. In addition, the ingredients in garlic juice are complex, and there may be only a few ingredients that are useful for algae inhibition, so the utilization rate of garlic in the methods of the aforementioned patents needs to be improved.

[0005] In some other existing technologies, such as "The Significance and Prospects of Allelopathy in Red Tide Control", "The Antibacterial Effects of Garlic Extracts and Root Secretions on Three Soil-borne Pathogens" and "The Allelopathic Effects of Garlic Root Secretions", they only mention the effects of some crude garlic extracts or the bactericidal effects of garlic root secretions. However, Microcystis is different from bacteria. Microcystis can photosynthesize, its individuals are larger, and its cell structure is more complex, while bacteria cannot photosynthesize, its individuals are smaller, and its structure is simpler. Therefore, most of the existing research stays on the inhibition of garlic extracts on bacteria, and has not deeply explored the effects of garlic root secretions on Microcystis. Summary of the invention

[0006] [Technical issues]

[0007] At present, there are physical methods for controlling microcystis blooms, including salvage, flocculation and sedimentation, water exchange, high pressure algaecide, ultraviolet algaecide and ultrasonic algaecide, chemical methods including chemical algaecide and oxidant algaecide, biological methods including microbial method, plant allelopathy, zooplankton feeding, benthic animal feeding, and fish feeding. However, physical methods are costly, time-consuming and labor-intensive, with short-lasting effects, and microcystis blooms are prone to re-eruption; chemical methods are prone to secondary pollution; biological methods have long cycles, are easily affected by the environment, and the overall process is uncontrollable. Therefore, there is an urgent need to find a method that is easy to operate, green and safe, and can effectively control microcystis blooms.

[0008] [Technical solution]

[0009] In order to solve the above problems, the present invention provides a method for controlling Microcystis blooms using garlic, wherein garlic is planted and fixed on a foam floating bed in a uniform matrix at a certain density, and then placed on the surface of a water body where Microcystis blooms gather, so that the garlic itself floats on the water body, while the garlic roots penetrate into the water body, and the garlic releases substances that inhibit Microcystis while growing, thereby achieving the effect of long-term control of Microcystis.

[0010] The present invention provides a method for controlling Microcystis blooms by using garlic, comprising the following steps:

[0011] Garlic is planted on a floating device at a certain density, and then the floating device planted with garlic is placed on the water body so that the roots of the garlic are submerged in the water body. While ensuring the growth of the garlic, the roots of the garlic secrete substances to inhibit microcystis.

[0012] Furthermore, the garlic includes garlic cloves that have grown roots and sprouted, or garlic cloves that have grown roots and have not sprouted, or living garlic plants.

[0013] Furthermore, the floating device is a device with a certain buoyancy and capable of floating on the water surface.

[0014] Furthermore, the floating device includes an aquatic planting floating bed and an artificial ecological floating bed.

[0015] Furthermore, the material of the floating device includes plastic, foam or rubber.

[0016] Furthermore, the floating device is provided with holes for placing garlic.

[0017] Furthermore, ensuring the growth of garlic means that only the root of the garlic is submerged in the water body, or the part above the root together with the root is submerged in the water body without hindering the survival and growth of the garlic.

[0018] Furthermore, the water body includes a lake, a reservoir, a river or a pond.

[0019] Furthermore, the density ratio of garlic to the density of Microcystis in the water is 0.15-5 kg / m 2 :0.1~2×10 8 cells / liter.

[0020] Preferably, the density of garlic and the density of Microcystis in the water body are in a ratio of 0.175 to 5 kg / m 2 :0.1~2×10 8 cells / liter.

[0021] More preferably, the density of garlic and the density of Microcystis in the water body are in a ratio of 0.2 to 5 kg / m 2 :0.1~2×10 8 cells / liter.

[0022] Specifically, the density of garlic and the density of Microcystis in the water body are 0.25-5 kg / m 2 :0.1~2×10 8 cells / liter.

[0023] Furthermore, when living garlic plants are used to carry out the above method, the density of garlic is calculated based on the root mass of the living garlic plants.

[0024] Furthermore, the Microcystis includes all species of the genus Microcystis.

[0025] The invention also provides application of garlic root secretions in controlling microcystis blooms.

[0026] Furthermore, the garlic root exudates are substances secreted by the roots of garlic cloves or garlic plants during their growth.

[0027] Furthermore, the application refers to planting garlic plants or garlic cloves at a certain density on the water surface using a floating device.

[0028] Furthermore, the Microcystis includes all species of the genus Microcystis.

[0029] [Beneficial Effects]

[0030] The operation is simple, the cost is low, the effect is excellent and sustainable: the method of controlling the microcystis bloom by using garlic is extremely simple to operate, and the garlic cloves only need to be planted in the floating bed, and then the garlic can be waited for to automatically secrete the substance that inhibits the microcystis bloom, so as to purify the water environment; at the same time, the subsequent garlic cloves treated by the method can continue to be planted in the soil, so as to generate economic benefits, and the whole process has no waste and no harmful substances are generated, the cost is very low, it is green and safe, and it conforms to the concept of sustainable development; finally, the method can achieve the effect of efficiently killing microcystis, and the growth rate of microcystis is less than -95.00%, so as to effectively control the outbreak of microcystis bloom. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below. It should be understood that the embodiments are for better explanation of the present invention and are not used to limit the present invention. The method for determining the density of Microcystis in the embodiments is referred to Zhang Zongshe and Huang Xiangfei's "Research Methods of Freshwater Plankton"; the reagents or other materials used in the present invention are all commercially available unless otherwise specified.

[0032] Example 1

[0033] A method for controlling Microcystis blooms using garlic comprises the following steps:

[0034] Garlic was planted uniformly in a certain density matrix on a foam floating bed and then placed on the surface of a pool with a Microcystis bloom (the area of ​​a pool in Wuxi is 36m 2 (6m long × 6m wide), water depth 2m), garlic releases substances that inhibit Microcystis while growing, thereby controlling the Microcystis bloom, and the whole process takes 15 days.

[0035] The garlic densities are 0, 0.125, 0.25, 1, 2.5, and 5 kg / m 2 The algae density in the Microcystis water bloom is 0.1×10 8 cells / liter.

[0036] Comparative Example 1

[0037] In the same area, the selected area is 36m 2 The invention relates to a water pool (6 m long × 6 m wide) with a water depth of 2 m. The garlic described in Example 1 is omitted, and the rest is consistent with Example 1.

[0038] After the entire treatment process was completed, the density of Microcystis in the water body was tested on the 15th day. The test results are shown in Table 1:

[0039] From Table 1, it can be seen that after the garlic was omitted in the control example 1, the number of Microcystis in the control group was significantly higher than that in the experimental group on the 15th day. Therefore, if the removal rate of Microcystis is 95%, and considering the effect and cost, the appropriate garlic density range for the treatment of Microcystis bloom is 0.25-5kg / m 2 .

[0040] Table 1 Comparison of the effect of different garlic densities on controlling Microcystis

[0041]

[0042]

[0043] Example 2

[0044] A method for controlling Microcystis blooms using garlic comprises the following steps:

[0045] Garlic was evenly distributed in a matrix at a certain density and fixed on a foam floating bed, and then placed on the surface of a pool where Microcystis blooms were gathered (the area of ​​a pool in Wuxi was 36m 2 (6m long × 6m wide), water depth 2m), garlic releases substances that inhibit Microcystis while growing, thereby controlling the Microcystis bloom, and the whole process takes 15 days.

[0046] Wherein, described garlic density is 5kg / m 2 The density of Microcystis in the Microcystis water bloom is in the range of 0.1×10 8 cells / L, 0.5×10 8 cells / L, 1.0×10 8 cells / L, 2.0×10 8 cells / L, 3.0×10 8 cells / liter.

[0047] After the entire treatment process was completed, the density of Microcystis in the water was tested. The test results are shown in Table 2:

[0048] It can be seen from Table 2 that if the removal rate of Microcystis is 95%, and considering the effect and cost, the initial density of Microcystis for treating Microcystis blooms ranges from 0.1 to 2×10 8 cells / liter.

[0049] Table 2 Comparison of algae control effects at different initial Microcystis densities

[0050]

[0051] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A method for controlling Microcystis blooms using garlic, characterized in that: The steps include: Plant garlic on a floating device at a certain density, then place the floating device planted with garlic on the water body so that the roots of garlic are submerged in the water body. While ensuring the growth of garlic, the roots of garlic secrete substances to inhibit microcystis. The ratio of garlic density to Microcystis density in water is 0.15-5 kg / m 2 :0.1~2×10 8 cells / liter.

2. The method according to claim 1, characterized in that The garlic includes garlic cloves that have grown roots and sprouted, or garlic cloves that have grown roots and have not sprouted, or living garlic plants.

3. The method according to claim 1, characterized in that The floating device is a device with a certain buoyancy and capable of floating on the water surface.

4. The method according to claim 1, characterized in that The material of the floating device includes plastic, foam or rubber; holes are distributed on the floating device for placing garlic.

5. The method according to claim 1, characterized in that The water body includes lakes, reservoirs, rivers or ponds.

6. The method according to claim 1, characterized in that The density of the garlic and the density of the Microcystis in the water body are in a ratio of 0.175 to 5 kg / m 2 :0.1~2×10 8 cells / liter.

7. The method according to claim 1, characterized in that The density of the garlic and the density of the Microcystis in the water body are in a ratio of 0.2 to 5 kg / m 2 :0.1~2×10 8 cells / liter.

8. The method according to any one of claims 1 to 7, characterized in that: When living garlic plants are used, the density of garlic is calculated based on the root mass of the living garlic plants.

9. An application of garlic root secretions for controlling Microcystis blooms, characterized in that: The garlic root exudates are substances secreted by the roots of garlic cloves or garlic plants when they grow.

10. The use according to claim 9, characterized in that The Microcystis includes all species of the genus Microcystis.

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