Testing device and method for studying how root systems respond to horizontal barriers

Abstract

The invention relates to a testing device for studying how root systems respond to horizontal barriers. The testing device includes a transparent square container used for growth of plant seedlings. A plurality of transparent partition plates are arranged in the square container from left to right to partition space in the square container into a plurality of partitioned regions filled with culture matrixes. Each partition plate is provided with a through hole communicated with the corresponding two adjacent partitioned regions. The front sidewall or the rear sidewall of the square container is provided with a plurality of testing holes corresponding to all the partitioned regions one to one. The invention further provides a testing method for studying how the root systems respond to the horizontal barriers. The testing device is simple in overall structure and low in cost, material obtaining and manufacturing are convenient, a soil environment in the horizontal growth process of the plant root systems can be simulated, and the testing device can be used for studying how the root systems start a morphophysiology response strategy to respond to the growth adversity and especially testing the ability of the plant root systems to respond to the solid barriers in the horizontal direction.

Description

technical field [0001] The invention relates to a test device and a test method for studying root system response to horizontal obstacles, and belongs to the research field of greening and afforestation technology under difficult site conditions. Background technique [0002] In recent years, my country's forest coverage rate has increased substantially, and some areas that are relatively easy to afforestation have basically completed the task of afforestation. However, with the rapid development of social economy, the destruction of forest land by humans is still very serious, forming large areas of rocky and difficult sites such as abandoned mines, exposed mountains, quarries, and construction waste landfills. How to improve the success rate of afforestation on these difficult sites and increase the green area is an urgent problem for forestry workers. Taking the abandoned mine land as an example, the human demand for mineral resources is increasing day by day, and the ex...

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Problems solved by technology

Abandoned mine land not only brings a series of environmental problems such as heavy metal pollution, soil erosion, and aggravated hidden dangers of geological disasters, but also leads to a low survival rate and preservation rate of afforestation, mainly because the root system often encounters soil solids such as rocks during the growth process Obstacles, causing the nutrients and water absorbed by the roots cannot meet the growth needs of the aboveground parts, resulting in slow growth of the forest stand, poor stability, low quality of the stand, and unable to exert higher benefits

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