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

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...

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.

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