Oxidation-reduction potential regulation and control device for plant root layer, culture device and regulation and control method

A technology of potential regulation and cultivation device, applied in the fields of plant nutrition, ecology and environmental science, and root biology, which can solve the problems of no regulation and lack of regulation.

Active Publication Date: 2017-08-22
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are currently commercial controllers that can regulate the redox potential, such as Eutech Instrument's Alpha pH190 and Alpha pH2000, but these two devices do not provide a technical solution for performing regulation
However, there is still a lack of reports on combining the above technologies to provide a set of cultivation observation devices that can effectively and automatically regulate the soil redox potential.

Method used

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  • Oxidation-reduction potential regulation and control device for plant root layer, culture device and regulation and control method
  • Oxidation-reduction potential regulation and control device for plant root layer, culture device and regulation and control method
  • Oxidation-reduction potential regulation and control device for plant root layer, culture device and regulation and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0088] This embodiment provides a plant root layer oxidation-reduction potential regulating device, and rice planting is taken as an example for illustration. figure 1 It is a schematic diagram of the overall structure of the control device of the present invention, figure 2 It is a schematic cross-sectional view of the culture device of the present invention.

[0089] The control device of the present invention comprises a container 1 with an open upper end, the container 1 is a clay basin of a hollow cylinder, the radius of the inner cavity is 12.5 cm, and the height is 26 cm; The free water in the layer container, after the two are combined, the structure diagram of the container 1 with the upper end opening is as follows image 3 shown.

[0090] The control device of the present invention also includes a cylinder 6 arranged in the container and one end of the cylinder is fixed on the bottom of the container, and the outside of the cylinder 6 and the inside of the conta...

Embodiment 2

[0119]This embodiment is the same as Embodiment 1 except for the following features: the liquid storage tank 19 is filled with 30g / L hydrogen peroxide to increase the redox potential, and the gas source 14 is connected to nitrogen to reduce the redox potential. The nitrogen flow rate is 60L / min, and the hydrogen peroxide flow rate is 1.5mL / min. The following sets the soil redox potential as 300mV as an example to illustrate the use effect. After the treatment starts, the change of soil redox potential is as follows: Figure 11 as shown, Figure 11 It is a graph showing the variation of soil redox potential with time when the plant root layer redox potential regulating device is used in Example 2.

Embodiment 3

[0121] This embodiment is the same as Embodiment 1 except for the following features: 3g / L sodium dithionite is housed in the liquid storage tank 19 to reduce the redox potential, and the gas source 14 is connected to compressed air to increase the redox potential.

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Abstract

The invention belongs to the technical field of phytology and ecology and discloses an oxidation-reduction potential regulation and control device for a plant root layer, a culture device and a regulation and control method. The culture device comprises a container with the upper end opened, a cylinder arranged in the container, a soil isolation net and a planting cylinder, wherein the space between the outer side of the cylinder and the inner side of the container are divided into a plurality of zones through vertical interlayers which extend in the radial direction of the cylinder; and the soil isolation net is fixed on the adjacent interlayers. The regulation and control device comprises the culture device and a plant root layer oxidation-reduction potential regulation and control system, wherein the plant root layer oxidation-reduction potential regulation and control system comprises an oxidation-reduction potentiometer, gas supply equipment, liquid supply equipment, a power supply circuit and a switching circuit. The regulation and control device can automatically regulate the soil oxidation-reduction potential to a set value through the gas supply equipment and / or the liquid supply equipment and maintain the soil oxidation-reduction potential to be within a set range, so that regulation and control of the plant root layer oxidation-reduction potential are realized; and besides, the integrity of a root system is kept during sampling.

Description

technical field [0001] The invention belongs to the fields of root biology, plant nutrition, ecology and environmental science, and in particular relates to a cultivation device for regulating and controlling the oxidation-reduction potential of the root layer of plants and a device for regulating and controlling the oxidation-reduction potential of the rhizosphere through substrate potting means and the regulation thereof method. Background technique [0002] Oxidation-reduction potential is an important physical and chemical index of soil. A high redox potential indicates that the soil is in an oxidized state, and variable-valence elements such as iron, manganese, chromium, and arsenic are converted into a high-valence state; conversely, a low redox potential indicates that the soil is in a reducing state, and the variable-valence elements are converted into a low-valence state. The solubility, migration ability and biological effects of these variable valence elements ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/02A01G9/10A01G7/06A01G7/02
CPCA01G7/02A01G7/06A01G9/028
Inventor 沈宏杨旭健
Owner SOUTH CHINA AGRI UNIV
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