Simulating method and simulating device of wetland plant rhizosphere anaerobic environment

Abstract

The invention relates to a simulating method and a simulating device of wetland plant rhizosphere anaerobic environment. The simulating method of the wetland plant rhizosphere anaerobic environment comprises spreading an agar gel layer with cane sugar on the bottom portion of bottom mud, injecting bottom mud on the agar gel layer and forming certain bottom mud anaerobic environment through the gradual degradation of the cane sugar to consume the oxygen in the bottom mud. The simulating device is composed of a plant planting column, a rhizosphere layer and an anaerobic bottom mud column, the plant planting column, the rhizosphere layer and the anaerobic bottom mud column are fixedly connected through polyvinyl chloride (PVC) flanges, screw holes and bolts, the thickness of the rhizosphere layer is 1mm to 2 mm, and the rhizosphere layer is filled with a thin layer of bottom mud in a using process. The simulating device is simple in manufacturing and the method is simple in application, and experiment simulation effect is good.

Description

technical field [0001] The invention belongs to the field of wetland ecology research and relates to a method and device for simulating anaerobic environment of wetland plant rhizosphere. Background technique [0002] With the increasingly serious problem of water pollution, the wetland ecosystem has been devastated, and the wetland vegetation has gradually declined and disappeared. From the long-term research on the evolution of wetland ecosystems and water pollution control at home and abroad, a consensus has been reached: restoration of wetland vegetation is a key link in controlling water eutrophication and rebuilding wetland ecosystems. In the case that the aquatic ecosystem has been destroyed, the restoration of wetland vegetation is restricted by many environmental conditions, and the sediment environment in contact with plant roots is the key factor. In the sediment with high organic pollution load, the degradation of organic matter will quickly deplete the dissolve...

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Problems solved by technology

However, the disadvantage of these methods is that the degradation intensity and progress cannot be controlled after one-time dosing of organic matter, especially in a high-temperature cultivation environment, and the anaerobic simulation effect is not long-lasting

Traditional square root boxes are mostly used for the cultivation of terrestrial plants. The water requirements and soil environment are very different from those of wetland plants. So far, no rhizosphere simulation device specially used for wetland or aquatic plants has been seen.

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