A collection device for monitoring nitrate leaching in dryland soil

Abstract

The invention discloses a device for nitrate leaching monitoring in dryland soil, and relates to a soil research device. The collection device for nitrate leaching monitoring in dryland soil comprisesa support tube and a collection tube. The support tube is provided with a side door I, a water-guiding groove, and a positioning hole I. The collection tube is provided with a side door II and a positioning hole II. The side door II corresponds to the side door I. The area of the side door I is less than the area of the side door II. The side door II is provided with a resin package. The positioning hole II corresponds to the location of the positioning hole I. A fixing device fixes and connects the support tube and the collection tube through the positioning hole I and the positioning hole II. Both ends of the support tube and the collection tube are open-ended, and a filter net is wrapped outside the support tube. A cap is provided at the opening of the end of the collection tube and the support tube. The collection device used for nitrate leaching monitoring of dryland soil, and can capture a slow process of nitrate leaching in dryland soil, accurate monitoring of the soil is realized, small disturbance to the soil is generated, the collection device has the advantages of simple operation and low cost, but also can be used for the collection other solutes in the soil.

Description

technical field [0001] The invention relates to a soil research device for monitoring soil solute migration, in particular to a collection device for monitoring soil nitrate leaching in dry land. Background technique [0002] The soil nitrate leaching process in the drylands of the northern or northwestern regions is not easy to capture, because the rainfall is less and the distribution is concentrated, the soil layer is thicker, and the soil water transfer is mostly in the form of diffusion. The nitrate migration in the soil is very slow, and the overall performance is long-term. Cumulative and occasional leaching, so the traditional methods of monitoring nitrate leaching are difficult to accurately monitor the migration process and leaching flux of nitrate, such as lysimeters or soil solution extractors, which are difficult to collect under non-rainstorm conditions At the same time, the installation process also greatly disturbs the soil. In this case, the accurate monito...

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Problems solved by technology

[0002] The soil nitrate leaching process in the drylands of the northern or northwestern regions is not easy to capture, because the rainfall is less and the distribution is concentrated, the soil layer is thicker, and the soil water transfer is mostly in the form of diffusion. The nitrate migration in the soil is very slow, and the overall performance is long-term. Cumulative and occasional leaching, so the traditional methods of monitoring nitrate leaching are difficult to accurately monitor the migration process and leaching flux of nitrate, such as lysimeters or soil solution extractors, which are difficult to collect under non-rainstorm conditions to the soil water, and the disturbance of the soil during the installation process is also large

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