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CN-122016939-A - Plant growth tag and preparation method and application thereof

CN122016939ACN 122016939 ACN122016939 ACN 122016939ACN-122016939-A

Abstract

The invention discloses a plant growth tag and a preparation method and application thereof, and relates to the technical field of plant physiological monitoring equipment, wherein the plant growth tag comprises a metal nanowire conductive film, a detection device and a detection device, wherein the metal nanowire conductive film is formed by interweaving a plurality of metal nanowires and is used for being attached to the surface of a plant organ through Van der Waals force to form non-invasive electrical contact with plant epidermal tissues so as to collect physiological electrical signals of plants; and the conductive lead is connected with the metal nanowire conductive film and is used for transmitting the plant physiological electric signals to external signal processing equipment or signal recording equipment. The metal nanowire conductive film has good flexibility, can be attached to the surface of a plant organ through Van der Waals force, has good attachment degree, light transmittance and air permeability, is not easy to generate mechanical and chemical damage to plants, can stably work on various plants for a long time, and supports electrochemical impedance continuous monitoring on physiological processes such as plant moisture state, mechanical damage and the like.

Inventors

  • HE TIANYIYI

Assignees

  • 深圳北理莫斯科大学

Dates

Publication Date
20260512
Application Date
20251230

Claims (10)

  1. 1. A plant growth tag, which is characterized in that, the plant growth tag includes: the metal nanowire conductive film is formed by interweaving a plurality of metal nanowires and is used for being attached to the surface of a plant organ through Van der Waals force and forming non-invasive electric contact with plant epidermis tissue so as to collect physiological electric signals of plants, and And the conductive lead is connected with the metal nanowire conductive film and is used for transmitting the plant physiological electric signals to external signal processing equipment or signal recording equipment.
  2. 2. The plant growing tag of claim 1, further comprising a bonding pad connecting the metal nanowire conductive film and the conductive lead; the material of the bonding pad is silver or hydrogel.
  3. 3. The plant growth tag of claim 1, wherein the metal nanowires of the metal nanowire conductive film comprise at least one of silver nanowires, copper nanowires, metal nanofibers, and/or, The plant growth tag has a light transmittance of >70% in the visible light band, and/or, The resistance of the metal nanowire conductive film is 0.1-100 omega/sq and/or, The plant growth tag can be continuously used along with the change of plant growth.
  4. 4. The plant growing tag of claim 1, wherein the metal nanowire conductive film is wholly or partially formed with at least one pair of collecting electrodes for collecting physiological electrical signals of plants, and each collecting electrode is connected with at least one conductive lead.
  5. 5. The plant growing tag of claim 4 wherein the structure of the harvesting electrode comprises a two electrode structure, a multi-electrode structure or an array electrode structure.
  6. 6. A method of making a plant growth tag according to any one of claims 1 to 5, comprising the steps of: S1, providing a conductive material solution; S2, closely attaching a strippable carrier to the surface of the porous filter membrane, then arranging an adhesive layer on the strippable carrier, and carrying out vacuum filtration on the conductive material solution to form a conductive film on the surface of the adhesive layer, wherein the strippable carrier, the adhesive layer and the conductive film form a plant growth label precursor; And S3, placing the plant growth label precursor in water, releasing and obtaining a conductive film, and connecting the conductive film with a conductive lead to obtain the plant growth label.
  7. 7. The method for producing a plant growth tag according to claim 6, wherein the conductive material solution comprises a metal nanowire dispersion, a polymer solution or a composite solution of both, and/or, The releasable support comprises anodized aluminum, and/or, The material of the adhesive layer comprises a two-dimensional sheet material that can form the layered stack feature of the solid filter membrane, and/or, The concentration of the metal nanowire dispersion liquid is 0.3-0.8 wt percent and/or, The number of times of vacuum filtration is 1-5 times.
  8. 8. Use of a plant growth tag according to any one of claims 1 to 5 for monitoring a physiological state of a plant.
  9. 9. Use according to claim 8, wherein the physiological state of the plant comprises a moisture state and/or mechanical damage.
  10. 10. The use according to claim 8, wherein the metal nanowire conductive film is wholly or partially formed with at least one pair of collecting electrodes for collecting physiological electrical signals of plants, each of the collecting electrodes being connected to at least one conductive lead, the use comprising the steps of: Transferring and attaching the plant growth tag to the surface of a plant organ by a water-assisted transfer method; loading a direct current or alternating current signal to each pair of acquisition electrodes; collecting electrochemical feedback information corresponding to plant tissues; And judging the physiological state of the plant according to the change of the electrochemical feedback information with time or frequency.

Description

Plant growth tag and preparation method and application thereof Technical Field The invention relates to the technical field of plant physiological monitoring equipment, in particular to a plant growth tag and a preparation method and application thereof. Background Along with the development of precise agriculture, intelligent greenhouses and urban sustainable agriculture, the demands for the fine monitoring of plant growth states are rapidly increased. Traditional plant health monitoring is mostly dependent on macroscopic phenotype observation or destructive sampling monitoring, wherein macroscopic phenotype observation comprises observation of leaf yellowing, wilting, disease spots and the like to judge physiological conditions of plants, but the means are strong in subjectivity and obvious in hysteresis and often show when plants are greatly damaged, destructive sampling detection comprises leaf picking for moisture content measurement, electrolyte leakage measurement, fluorescent staining or molecular biology detection, and the like, but the methods need to cut tissues and even sample for multiple times, cannot realize long-term continuous monitoring of single plants and single leaf positions, and can interfere plant growth. Therefore, the existing devices for monitoring plant physiology are preferably needle electrodes, tape-adhered electrodes, metal electrodes on polyimide or polylactic acid fiber membranes, etc. However, the number of the electrodes is fixed by using adhesive tapes and adhesives, and the cuticle and the epidermis are torn when the electrodes are detached, so that the subsequent growth of plants is not facilitated. Disclosure of Invention The invention mainly aims to provide a plant growth tag, a preparation method and application thereof, and aims to solve the problem that in the prior art, plant electrodes are easy to damage plants in the process of placing or taking down. To achieve the above object, the present invention provides a plant growth tag comprising: the metal nanowire conductive film is formed by interweaving a plurality of metal nanowires and is used for being attached to the surface of a plant organ through Van der Waals force and forming non-invasive electric contact with plant epidermis tissue so as to collect physiological electric signals of plants, and And the conductive lead is connected with the metal nanowire conductive film and is used for transmitting the plant physiological electric signals to external signal processing equipment or signal recording equipment. In an embodiment, the plant growth tag further comprises a pad connecting the metal nanowire conductive film and the conductive lead; the material of the bonding pad is silver or hydrogel. In one embodiment, the metal nanowires in the metal nanowire conductive film comprise at least one of silver nanowires, copper nanowires, and metal nanofibers, and/or, The plant growth tag has a light transmittance of >70% in the visible light band, and/or, The resistance of the metal nanowire conductive film is 0.1-100 omega/sq and/or, The plant growth tag can be continuously used along with the change of plant growth. In one embodiment, the metal nanowire conductive film is wholly or partially formed with at least one pair of acquisition electrodes for acquiring physiological electric signals of plants, and each acquisition electrode is connected with at least one conductive lead. In an embodiment, the structure of the collecting electrode includes a two-electrode structure, a multi-electrode structure or an array electrode structure. The invention also provides a preparation method of the plant growth tag, which comprises the following steps: S1, providing a conductive material solution; S2, closely attaching a strippable carrier to the surface of the porous filter membrane, then arranging an adhesive layer on the strippable carrier, and carrying out vacuum filtration on the conductive material solution to form a conductive film on the surface of the adhesive layer, wherein the strippable carrier, the adhesive layer and the conductive film form a plant growth label precursor; And S3, placing the plant growth label precursor in water, releasing and obtaining a conductive film, and connecting the conductive film with a conductive lead to obtain the plant growth label. In one embodiment, the conductive material solution comprises a metal nanowire dispersion, a polymer solution, or a composite solution of both, and/or, The releasable support comprises anodized aluminum, and/or, The material of the adhesive layer comprises a two-dimensional sheet material that can form the layered stack feature of the solid filter membrane, and/or, The concentration of the metal nanowire dispersion liquid is 0.3-0.8 wt percent and/or, The number of times of vacuum filtration is 1-5 times. The invention also provides application of the plant growth tag in monitoring physiological states of plants. In one embodiment, the plant physiolo