Root box for submerged plant cultivation and rhizosphere microcell DGT test and use method thereof

Abstract

The invention provides a root box for submerged plant cultivation and rhizosphere microcell DGT test and a use method thereof. Two filter screens are adopted for separating an inner chamber of a box body of the root box into a lower layer chamber, a middle layer chamber and an upper layer chamber which are arranged in turn from bottom to top; the roots of the submerged plant are cultivated in the middle layer chamber; the rhizosphere microcell sediments and the rootless sediments are effectively and obviously separated; and meanwhile, a test port, through which DGT and sediment sampler can pass, is formed on a side wall of the middle layer chamber; the in-situ and accurate determination of DGT for the elements, such as phosphorus, in the process of migrating on a plant root / sediment interface can be realized; complete plant root characteristics can be acquired. The root box provided by the invention has the advantages that the structure is simple, the survival rate of the plants is high and the root box can be used for evaluating the bio-availability of the elements such as phosphorus. According to the use method of the root box provided by the invention, the cultivation for submerged plant and the in-situ test for rhizosphere microcell DGT can be realized at the same time, the operation is simple and convenient, and the use method can be easily large-scale popularized.

Description

technical field [0001] The invention relates to the technical field of water environment ecological restoration, in particular to a root box device for submerged plant cultivation and DGT in-situ testing of phosphorus and other elements in plant rhizosphere micro-regions and a use method thereof. Background technique [0002] At present, more than 80% of the lakes in our country have been polluted, and the eutrophication of the water body is becoming more and more serious, which has become a major environmental problem that needs to be solved urgently. Therefore, water body treatment and water environment ecological restoration technologies have emerged as the times require. According to the different principles of water body treatment and restoration, the technology can be divided into three categories: physical method, chemical method and biological-ecological method. It has developed into the main technical means of water environment pollution control. In bio-ecological ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of the existing submerged plant planting devices, such as complex structure, poor water body repair effect, and inability to perform DGT in-situ testing, and to provide a simple structure, good water body repair effect and Root box for submerged plant cultivation and rhizosphere microzone DGT testing for DGT in situ testing and methods of use thereof

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