Portable three-dimensional type rice field soil solution extracting device and rice field soil solution extracting method

Abstract

The invention discloses a portable and simple three-dimensional type rice field soil solution extracting device which mainly comprises a stainless steel tube, solution permeating devices and solution collecting tubes. Hollowed-out areas are formed in the ranges, away from the top end of the stainless steel tube by 14-16 cm, by 24-26 cm and by 44-46 cm, on the surface of the stainless steel tube respectively, and the three soil solution permeating devices are embedded in the positions, corresponding to the hollowed-out areas, in the stainless steel tube respectively. The surface of the upper portion cylinder of each soil solution permeating device is wrapped with two layers of first geotechnical cloth, the lower cone of each soil solution permeating device is connected with a plastic hose, and the corresponding solution collecting tube is arranged at the lower end of each plastic hose. A sector door is formed in the side surface of the stainless steel tube, and the outer surface of the stainless steel tube is wrapped with a layer of second geotechnical cloth. By means of the portable three-dimensional type rice field soil solution extracting device, soil solution samples, at different depths, of the same soil can be collected, and the true level of the nutrition content of the soil solution can be reflected; the portable three-dimensional type rice field soil solution extracting device has the advantages of being light, simple, practical, low in cost and the like, and the phenomenon of jamming of a sampling tube can be avoided.

Description

technical field [0001] The invention relates to the field of soil solution extraction devices, in particular to a portable three-dimensional simple paddy field soil solution extraction device and a method for using the same. Background technique [0002] Soil solution is generally defined as soil interstitial water containing solutes and dissolved gases, and it is the site where soil chemical reactions and soil formation processes take place. The concentration of each element in the soil solution is a quantitative index reflecting the presence of the element in a mobile ion state. Generally, only the most active part is dissolved in the soil solution, which is prone to oxidation, reduction, precipitation, complexation, leaching and Processes such as absorption by plants. At present, soil solution has become an important research content of soil, plant nutrition, ecological environment and other disciplines. Agronomic and environmental significance, research on the mobility...

AI Technical Summary

Problems solved by technology

Among them, destructive sampling can be divided into centrifugation method, extraction method, replacement column method, filter press method, etc. This method is simple and operable, but it cannot reflect the true level of soil solution

Non-destructive sampling methods can be divided into osmometric methods, negative pressure methods, diffusion methods, capillary methods, etc. The use of pottery head soil solution extractors to collect soil solution is one of the more commonly used methods. This method requires a certain amount of negative pressure from the outside world. pressure, high cost and complicated operation

All in all, the above soil collection methods have their advantages and limitations.

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