Method and device for measuring soil mass moisture content

Abstract

The invention discloses a method and a device for measuring soil mass moisture content. The method comprises the steps of S1. putting a soil sample to be measured into a container, and measuring by using a weighing device to obtain the primary mass m of the soil sample; and S2. adding water into the container so as to obtain a mixture, of which the volume is v', of the soil sample and the water, measuring by using the weighing device to obtain the mass m' of the mixture; and S3. calculating the soil mass moisture content by utilizing the known soil granular density ps and the water density pw in the soil sample according to the primary mass m of the soil sample, the volume v' of the mixture and the mass m' of the mixture. The device comprises a computer, an electronic balance, a soil container, a water pipe and a data line. The method and the device for measuring the soil mass moisture content are applicable to direct measurement of the soil mass moisture content, simple and convenient in operation process and good in stability.

Description

technical field [0001] The invention relates to the technical field of soil environment measurement, in particular to a method and device for measuring moisture content of soil quality. Background technique [0002] Soil moisture is the basis of many scientific researches and engineering applications, and it is of great significance in the research and practice of building foundations, soil mechanics, road construction, crop cultivation, farmland irrigation, and ecological environment. The measurement and control of soil moisture content is crucial to ensure the quality of foundation and road construction, and plays an important role in the terrestrial water cycle, global climate, surface matter and energy exchange with the atmosphere. Soil water restricts the dissolution and transfer of nutrients and solutes in the soil, thereby affecting soil fertility and soil properties, affecting microbial activities, and is also the main factor affecting vegetation growth in ecosystems...

AI Technical Summary

Problems solved by technology

This method often needs to stir the soil sample and repeatedly burn the soil sample, which is time-consuming and energy-consuming, and it is easy to drop soil particles during the stirring process, and it cannot guarantee that the moisture in the soil is completely burned, resulting in measurement errors

However, other indirect measurement methods must be calibrated and calibrated by one of the above two direct measurement methods. At the same time, there are many defects such as expensive, difficult to operate, and may be harmful to the human body.

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