Plant growth lysimeter capable of bidirectionally controlling temperature of undisturbed soil

Abstract

The invention relates to a plant growth lysimeter capable of bidirectionally controlling the temperature of undisturbed soil. A protective barrel, a container barrel, a leakage water metering sensor,a weighing sensor, a soil temperature sensor, a bidirectional temperature control exchange pipeline, a refrigeration ventilation network pipe and a heating ventilation network pipe are used for detecting an evaporation change signal voltage value by a multi-path data acquisition and storage system, determining the evaporation of plant moisture and the transpiration of plants in the container by asoil leakage acquisition instrument, and dividing the signal value by a voltage-force value sensitivity coefficient of a sensor to obtain the weight of the container. The total weight of the containeris weighed, and the weight difference at different moments is the moisture evapotranspiration amount in the period of time. The device is simple in structure and convenient to use, and can be widelyapplied to research on forestry, ecology, reservoirs, industrial and mining engineering observation and the like.

Description

technical field [0001] The invention relates to an electronic instrument for affecting the growth process of plants by changing the soil temperature and simultaneously measuring the changes of plant water evaporation and soil leakage. Background technique [0002] Under the background of global climate change and temperature rise, it has become an important and popular research topic to explore the change of plant community structure from different perspectives. The ecological typicality of the Qinghai-Tibet Plateau is more sensitive to climatic factors and has a significant subsequent impact. Therefore, it is necessary to determine the transpiration water consumption of various plants in this area under the influence of different temperatures and its variation law during the growth period. At the same time, it is also necessary to determine the conservation and utilization of water by the soil-vegetation complex under the influence of different temperatures, as well as t...

AI Technical Summary

Problems solved by technology

The existing lysimeter device mainly focuses on the weight change of the container. The original soil in the lysimeter container is artificially disturbed to destroy the original stratum structure. The installation of the load cell at the bottom of the lysimeter container causes the plants in the entire container to work at the bottom. Growing in a large air environment, the basement has damage to the growth environment of vegetation and human interference, and the temperature cannot be controlled, thus failing to meet the needs of actual scientific research

Images