System and method for measuring soil infiltration capability

Abstract

The invention discloses a system used for measuring soil infiltration performance and includes a constant flow water supplying device, a point source inflow device, a soil storage device and a timing device. The constant flow water supplying device is connected with a point source inflow device, and is used for supplying water to the point source inflow device with a constant flow and monitoring the output stream; the point source inflow device is arranged on the surface of the soil stored by a soil storage device and is used for leading the water flow provided by the constant flow water supplying device to enter the soil with a point source inflow mode; the soil storage device is used for storing the soil and monitoring a wetting front of the soil; the timing device is used for recordingthe time corresponding to the quantity of the water provided by the constant flow water supplying device and the wetting front of the soil and acquiring the soil infiltration rate of the corresponding time according to the stream flow and the wetting radius of the soil of the corresponding time, thus meeting the condition of sufficient water supplying during the test process, ensuring the undisturbed performance of the soil, being capable of measuring the soil infiltration performance simply and accurately.

Description

technical field The invention relates to the technical field of soil infiltration performance measurement, in particular to a point source inflow measurement system and method for soil infiltration performance. Background technique Infiltration refers to the process of water entering the soil and is an important link in the natural water cycle. The process of soil infiltration involves surface runoff, distribution of soil moisture after irrigation or rainfall, the replenishment of shallow groundwater by rainfall, and the migration of pollutants such as fertilizers and pesticides with water. Studying this process is of great significance for increasing soil infiltration, reducing surface runoff, and preventing soil erosion. Soil infiltration is an inherent property of soil. In the process of infiltration, the soil infiltration rate is high at the beginning, decreases with time, and finally tends to be stable, reaching a stable infiltration rate. The stable soil infiltrati...

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Problems solved by technology

But at the same time, the infiltration area is small (diameter 20cm), the depth is shallow (20-30cm), the representativeness is poor, and there is side seepage during the test, which affects the measurement accuracy of the test

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