Novel soil column barrel of soil moisture lysimeter

Abstract

The invention discloses a novel soil column barrel of a soil moisture lysimeter. Thenovel soil column barrel comprises a measuring barrel body, a glass fiber reinforced plastic anti-corrosion layer is arranged in the measuring barrel body, detector holes are evenly distributed in the circumferential outer wall of the measuring barrel body in the vertical direction, and permeation holes are evenly distributed in the lower surface of the measuring barrel body; The upper end of the measuring barrel body is provided with a runoff hole, the detector holes and the permeation holes both penetrate through the glass fiber reinforced plastic anti-corrosion layer, the upper end of the measuring barrel body is provided with a rainproof cover, the rainproof cover is in an inverted circular truncated cone shape, the outer portion of each detector hole is provided with a waterproof plug, and each waterproof plug is fixedly connected with the measuring barrel body. The rainproof cover inclines by 45 degrees in the vertical direction, and the inner diameter of the top end of the rainproof cover is matched with the inner diameter of the measuring barrel body. In the using process, the effect of protecting the measuring barrel can be achieved, the service life is prolonged, and the accuracy of measured data is improved.

Description

technical field [0001] The invention relates to the technical field of lysimeters, in particular to a novel soil column barrel of a soil moisture lysimeter. Background technique [0002] Among the various components of farmland water conversion, evapotranspiration and phreatic evaporation are the most difficult to measure. Whether it is due to groundwater infiltration during daily rainfall or other reasons, it is very important for the growth of crops. At present, soil moisture lysimeters are widely used, mainly using scales. To record the change of soil moisture in a heavy way, in order to focus on monitoring, the lysimeter is roughly divided into soil column barrel, measurement structure and protective device, especially for the soil column barrel, during the measurement process, the staff needs to To install a certain depth requirement, dig out the soil column, and install the bucket body at the original position, but under long-term use, the inner wall of the bucket will...

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Problems solved by technology

[0002] Among the various components of farmland water conversion, evapotranspiration and phreatic evaporation are the most difficult to measure. Whether it is due to groundwater infiltration during daily rainfall or other reasons, it is very important for the growth of crops. At present, soil moisture lysimeters are widely used, mainly using scales. To record the change of soil moisture in a heavy way, in order to focus on monitoring, the lysimeter is roughly divided into soil column barrel, measurement structure and protective device, especially for the soil column barrel, during the measurement process, the staff needs to To install a certain depth requirement, dig out the soil column, and install the bucket body at the original position, but under long-term use, the inner wall of the bucket will be corroded by other substances in the soil, and will also be affected by the amount of rainwater and wind in the environment outside the installation. Influenced by factors such as soil moisture and other factors, the measurement data is not accurate enough. Therefore, in order to solve such problems, we propose a new type of soil moisture lysimeter soil column barrel

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