In-situ multipoint collecting device and method of suction-adjustable soil solution

A soil solution and collection device technology, applied in the direction of sampling devices, etc., can solve the problems of high cost, affecting test accuracy, large errors, etc., and achieve the effect of low cost, improving collection efficiency and collection accuracy

Inactive Publication Date: 2010-05-12
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Abstract
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  • Claims
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Problems solved by technology

The destructive sampling method often changes the chemical composition and balance of the soil solution, making it impossible to carry out long-term positioning research; while for non-destructive sampling, the method of in-situ extraction is generally adopted. At present, many in-situ extraction methods have been developed at home and abroad. Methods and devices for extracting soil solution, such as suction cup method, rhizosphere soil solution sampler, etc., but these methods have their own limitations, such as suction cup method is susceptible to

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  • In-situ multipoint collecting device and method of suction-adjustable soil solution
  • In-situ multipoint collecting device and method of suction-adjustable soil solution

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[0023] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0024] figure 1 It is a structural diagram of a soil solution collection device according to an embodiment of the present invention. Such as figure 1 As shown, the device includes a leakage tube 2, a graduated collection bottle 9, a graduated pressure control bottle 16 and a vacuum pump 18 connected with a clay head 1 at the bottom. The clay head 1 is buried in the soil according to the depth of the soil to be sampled in. One end of the soft catheter 5 is sealed and inserted into the leakage tube 2, and the other end is inserted into the graduated liquid collection bottle 9. Both the leakage tube 2 and the graduated liquid collection bottle 9 pass through the rubber stopper 4. Sealed, the other end of the soft...

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Abstract

The invention discloses an in-situ multipoint collecting device and a method of a suction-adjustable soil solution. The device comprises a leaky pipe, the bottom of which is connected with a ceramic head or a film-type liquid-taking head, a liquid collecting bottle with scales, a multipath venting device, a pressure controlling bottle with scales and a vacuum air pump, wherein the leaky pipe is connected with the liquid collecting bottle with scales; the liquid collecting bottle with scales is connected with the pressure controlling bottle with scales through the multipath venting device; and the pressure controlling bottle with scales is connected with the vacuum air pump. The technical scheme is that the invention can continuously collect a plurality of samples simultaneously, accurately control the vacuum suction used in collecting, and improve the collecting efficiency and the collecting precision, is applicable to in-situ collecting of the soil solution, and has simpleness, reliability and low cost.

Description

technical field [0001] The invention relates to a soil solution collection device, in particular to an in-situ multi-point collection device and method for suction-adjustable soil solution used in greenhouses or in the field. Background technique [0002] Soil solution has become an important research content of soil, plant nutrition, ecological environment and many other disciplines. There are many existing sampling methods, and the common sampling methods include: centrifugation, extraction, replacement column method, filter press, osmometric method, negative pressure method, diffusion method, capillary method, etc., among which the first four belong to the destructive method. destructive sampling, the last four are non-destructive sampling. The destructive sampling method often changes the chemical composition and balance of the soil solution, making it impossible to carry out long-term positioning research; while for non-destructive sampling, the method of in-situ extra...

Claims

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Application Information

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IPC IPC(8): G01N1/14
Inventor 薛绪掌李邵乔晓军郑文刚
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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