Sampling device of rhizosphere micro-region soil

Abstract

The invention discloses a rhizosphere soil sampling device, comprising a square box, where two mesh dividing pieces seamlessly connected with the box are symmetrically arranged in the cavity of the box, so as to divide the cavity into left, middle and right chambers, the two mesh dividing pieces are parallel with the centre line of the box, at least a mesh insert piece is arranged in each of the left and right chambers, the mesh insert piece seamlessly adheres to the adjacent mesh dividing piece, and the mesh insert pieces in the left and right chambers are symmetrical to the center line of the box, the mesh diameters of the mesh dividing pieces and mesh insert pieces are all 25 microns. And the sampling device can implement sampling of rhizosphere soils at different mm levels.

Description

technical field [0001] The invention relates to a sampling device for rhizosphere micro-domain soil. Background technique [0002] The development of rhizosphere pollution chemistry largely relies on the differentiation of rhizosphere microsoils. For the collection method of rhizosphere soil in the conventional rhizosphere research method, the traditional research mostly uses the artificial shaking separation method and the root bag method. These two methods have the defect of inhomogeneous sampling volume under conditions such as different plant species, soil type and field humidity (Rillig et al., Soil Biology & Biochemistry 1997, 29: 1387~1394), and easily lead to a small number of root tissues especially Root hair residues, which affect the analysis and determination of rhizosphere soil microbial biomass (Mueller et al., Soil Biology & Biochemistry 1992, 24: 179-181), and cause researchers to be biased when evaluating the remediation effect of the tested plants on the t...

AI Technical Summary

Problems solved by technology

Although this method solves the problem of distinguishing different millimeter-scale rhizosphere micro-domains, because it needs to be frozen in the specific operation, it will lead to changes in the original physical, chemical and biological properties of the rhizosphere soil, so it cannot be used for millimeter-scale Tracking the response changes of soil biological and biochemical properties in rhizosphere micro-domains under the stress of target pollutants

As a result, the inherent technical defects of conventional rhizosphere research methods have become the bottleneck problem in carrying out detailed research on the migration and transformation of target pollutants in the rhizosphere millimeter-scale micro-domain; Innovate with sampling methods

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