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Algae-inhibiting material and its application in agricultural greenhouse film

A technology for agricultural greenhouses and biomass materials, which is applied to algae-inhibiting materials and its application in agricultural greenhouse films to achieve the effects of low cost and price, meeting large-scale use and ensuring stability

Active Publication Date: 2022-07-01
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no specific cleaning technology developed for the algae deposited on the agricultural greenhouse film. Therefore, it is very important to develop a green and sustainable agricultural greenhouse film algae inhibition technology.

Method used

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  • Algae-inhibiting material and its application in agricultural greenhouse film
  • Algae-inhibiting material and its application in agricultural greenhouse film
  • Algae-inhibiting material and its application in agricultural greenhouse film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The present embodiment provides the application method and performance test of the algae inhibitory material on the agricultural greenhouse film:

[0049] The polyphenol used in this example is bayberry tannin (BT). The specific conditions of plant polyphenols, metal ions, biomass materials and auxiliary agents are shown in Table 1.

[0050] Table 1

[0051] .

[0052] First, the plant polyphenols and metal ions are added to the water, mixed evenly, and sprayed on the agricultural greenhouse film; then, the biomass material solution and the auxiliary are sprayed in turn. The inhibitory performance of the agricultural greenhouse film sprayed with the algae inhibitory material obtained in this example on Microcystis aeruginosa (MA) and Chlorella vulgaris (CH) was tested.

[0053] The test method is as follows: the experimental group is set as the agricultural greenhouse film coated with the algae inhibitory material, and the control group is set as the blank agricultu...

Embodiment 2

[0056] This example is used to illustrate the performance test of the polyphenol-metal nanoparticles formed by the same polyphenol and various metal ions in inhibiting Microcystis aeruginosa and Chlorella:

[0057] In this example, the polyphenol is myricetium tannin (BT), and the other components are shown in Table 2.

[0058] Table 2

[0059] .

[0060] For the algae-inhibiting material prepared above, a solid medium was used to replace the agricultural greenhouse film, and the algae-inhibiting material was coated on the medium containing Chlorella vulgaris and Microcystis aeruginosa respectively, and its effect on Chlorella vulgaris and Microcystis aeruginosa was determined respectively. The inhibitory performance of Microcystis; set the experimental group to be the medium coated with the algae inhibitory material, the control group to be the medium not coated with the algae inhibitory material, and the samples of the experimental group and the control group were placed ...

Embodiment 3

[0062] This example is used to illustrate the influence of algae inhibitory material on the light transmittance of agricultural film:

[0063] The bayberry tannins (BT) and Cu 2+ The solution is added into water at a concentration ratio of 4:1, mixed evenly, sprayed on the agricultural greenhouse film, and then sprayed with sodium alginate solution with a concentration of 1.5%, and finally sprayed with pH=7.4 sodium dihydrogen phosphate and dodecahydrate disodium hydrogen phosphate mixed solution to obtain the algae-inhibiting nano-coating adhered on the agricultural film.

[0064] Light transmittance test method: The light transmittance test was carried out on the agricultural greenhouse film coated with the algae inhibitory material obtained in this example. The transmittance test is to use a UV-Vis-NIR spectrometer (PerkinElmer PE1050) to test the transmittance in the wavelength range of 250 - 2500 nm. The test performance is as follows Image 6 shown. Image 6 Transmiss...

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Abstract

The invention belongs to the technical field of algae suppression, and discloses an algae suppression material and its application in an agricultural greenhouse film. The raw materials of this algae inhibitory material include plant polyphenols, metal ions, biomass materials and adjuvants. The complexation of polyphenol-metal enables metal ions to be stabilized on the surface of agricultural film, and together with plant polyphenols, play a synergistic role in inhibiting algae. The contact of polyphenol-metal complexes with algal substances will cause oxidative damage to algal cell membranes, interfere with the normal metabolism of algae, and cause apoptosis of algal cells, thereby inhibiting or killing algae. The sprayed nano-coating will not affect the light transmittance of the currently used agricultural film, which can ensure the utilization of light by plants. The spraying method is simple, quick, efficient, energy-saving, and low-cost, and meets the conditions for large-scale use.

Description

technical field [0001] The invention belongs to the technical field of algae suppression, in particular to an algae suppression material and its application in agricultural greenhouse films. Background technique [0002] Agricultural greenhouse film is one of the important facilities in modern agricultural production technology. It provides more suitable growth conditions for crops, and can achieve functions such as heat preservation, antifreeze, moisture retention and fertilizer preservation to promote a substantial increase in crop yields, changing the high dependence of different crop planting on natural conditions in traditional agriculture. At the same time, the emergence of functional agricultural greenhouse films has enriched and expanded its scope of use. For example, high-transparency films and light-converting films have increased the utilization rate of sunlight by plants; liquid agricultural greenhouse films and degradable agricultural greenhouse films have reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/14A01G9/14
CPCC09D5/14A01G9/1407Y02A40/25
Inventor 郭俊凌何云翔王晓玲王明耀杨其长杨晓胡江涛
Owner SICHUAN UNIV
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