A plant rhizosphere micro-soil extraction device

Abstract

The invention discloses a plant rhizosphere trace soil-taking device. The device mainly includes a trace soil-taking needle, a mechanical telescopic arm, a central control system and a slideway, wherein the central control system is arranged on the slideway, and the mechanical telescopic arm is fixed on the central control system. In the system, the micro soil needle is set at the end of the mechanical telescopic arm. The device of the invention is used for collecting trace rhizosphere soil samples at different positions and depths in fine agronomy and botany scientific experiments, while protecting the health of the root system to the greatest extent possible and retaining the soil structure. It provides a more reliable means of sample collection for fine agronomy and botany science experiments.

Description

Technical field [0001] The present invention belongs to the field of agronomics, and more particularly to plant raw tank soil. Background technique [0002] In the fields of agronomics and botany, the Daejeon trials and potted trials are important research methods. By analyzing the biochemical response between roots and soil, exploiting planting growth, metabolism and secretion under controlled artificial conditions. Substance energy exchange. During the test, there is often a need to collect potted or near-surface plants to analyze tests, while sample collection issues are often the key to constraints, and their technical difficulties have two main aspects. [0003] (1) Sampling disturbance problem. It is the need to continue the root of the root soil sample, and it is not necessary to disturb the root environment, try not to damage the soil pore structure and do not damage the roots. Therefore, the amount of sample must be very small, the disturbance is small, the sampling posi...

AI Technical Summary

Problems solved by technology

[0004] (2) Mechanics of piercing

[0006] (1) Direct excavation: The area affected by this method is too large, the disturbance to the plant rhizosphere environment is too severe, and even the normal physiological process of the plant is destroyed, making the plant unable to be used for continuous observation and research

[0007] (2) Ring knife collection: If the ring knife is directly drilled into the surface, the sampling depth is not enough, and it is difficult to study the complete rhizosphere; if the soil profile is excavated and then drilled into the ring knife, the efficiency is very low, often in order to form a 1m deep longitudinal section , need to excavate at least 1m 3 At the same time, the original soil structure will be destroyed in a large area, and the plant rhizosphere environment will be severely disturbed

[0008] (3) Soil auger collection: This method requires vertical drilling of stainless steel soil augers, but the deeper the sampling depth, the greater the resistance, often requiring the use of hydraulic machinery to complete soil extraction; moreover, the cutting edge of the soil auger is often unable to cut off the root system, thus dragging the root system , affect the distribution of the original root system of the plant, and even cause a large number of fractures to the root system, and the wound fluid infiltrates the rhizosphere soil, which will bring unpredictable variables to the next sampling; at the same time, after the soil auger is pulled out, the formed cavity is difficult to backfill well , it is easy to form preferential flow here, which is not conducive to protecting the original rhizosphere soil hydraulic conditions

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