A small detachable soil column simulation device

Abstract

The invention relates to a small detachable soil column simulation device, which is characterized in that the device includes: a liftable support platform; a soil column bottom unit; and a number of combined column units with openings at both ends connected in series from top to bottom. , the bottom of the combined column unit at the bottom can be detachably connected to the top of the soil column bottom unit; a detachable screen is fixed above the interior of the soil column bottom unit. The detachable screen can prevent direct mixing between soil and quartz sand. ; An infrared lamp located above the uppermost combined column unit and fixedly installed on the top of the liftable support platform for simulating the evaporation process; a liquid adder fixedly installed on the top of the liftable support platform for simulating the water adding process; and , a jet is hung above the uppermost combined column unit, and the liquid doser outlet is connected to the jet through a pipeline. The invention can be widely used in soil column simulation tests.

Description

technical field [0001] The invention relates to a small detachable soil column simulation device and belongs to the technical field of agricultural soil sampling. Background technique [0002] Soil is the basic condition for human survival and all social activities. It is an important factor to ensure the growth and development of crops. With the rapid development of modern industry and the continuous increase of the world population, the demand for agricultural land is also increasing. Therefore, , Improving the physical and chemical properties of soil, improving soil quality, and increasing the yield and quality of crops in limited land are important guarantees for agricultural development and sustainable agricultural development. Among them, soil science research is to improve soil quality and crop yield in limited land and quality of the important way. The packed soil column simulator is a commonly used equipment in soil science research. It can use scientific means to ...

AI Technical Summary

Problems solved by technology

The specifications of the visible soil columns in the loaded soil column simulation device are currently different. Taking the circular visible soil column as an example, it is generally believed that the length of the circular visible soil column should be greater than 2.5 times its diameter. , the most commonly used soil columns can be divided into two categories, one is large soil columns, generally with a diameter of more than 30cm; There are many, generally used for soil observation with a long period, multiple sampling can be carried out, and the column wall is also suitable for setting soil sampling holes, but it is difficult to fill and requires a lot of labor, so it is not suitable for tests with a short period

Small soil columns can be used for short-term observation, but due to the small amount of soil filled, they are suitable for destructive sampling. At the same time, because the diameter of the column is too small and drilling is not easy, it is not suitable to set multiple soil sampling holes. In this way, because the column is too long , the difficulty of sampling increases, so that destructive sampling often cannot completely remove the soil in the column, or the soil sample is easily contaminated by soil samples from other layers, and the sampling time is longer, which reduces the efficiency of soil sampling

In addition, due to the simple operation of small soil columns, some short-term tests require soil tests at different depths. Therefore, it is necessary to prepare test soil columns of different specifications and lengths according to the test requirements, which increases the cost of the test.

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