Method and device for collecting and measuring leakage water of large-scale rice field undisturbed soil column

An undisturbed soil column, large-scale technology, applied in the sampling device and other directions, can solve the problems of uneven pressure application, deformation of the collection device, difficulty in profit and loss of seepage liquid, etc., to solve the contradiction of seepage collection facilities, improve the reliability of samples, and simplify The effect of construction difficulty
CN102607892BInactive Publication Date: 2013-05-01INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Publication Date
2013-05-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a device for collecting and measuring leakage water of a large-scale rice field undisturbed soil column. The method comprises the following steps: A, determining a leakage liquid standard collection area according to a base area of the soil column; B, embedding a conic filter at the middle position of the soil column, where an underlying surface is arranged, wherein the middle position is lower than the underlying surface; and completely collecting soil column leakage liquid inside the area at the bottom surface of the conic leakage filter; C. grooving to lead an aqueduct out from the flat surface of the underlying surface of the soil column by utilizing topographic fall head formed when the undisturbed soil column is distributed; and D. firstly opening an air vent of a measurement barrel to ventilate when the leakage liquid is collected, recording the scale of the measurement barrel at regular intervals, uniformly stirring a water sample by a glass rod passing through the air vent of a primary barrel, then opening a sampling pipe valve for sampling, and closing a drain pipe and the sampling pipe valve after water is completely drained, so as to finish the collection and the measurement of the leakage liquid. The device comprises three parts of the conic filter, the aqueduct and a measuring device. The method is feasible, is easy and simplein operation, and can be used for accurately determining the amount of the leakage liquid; and the obtained sample is high in reliability.
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Description

technical field

[0001] The technology of the present invention belongs to the technical field of agricultural environmental tests, and relates to a method for collecting and measuring seepage of a large undisturbed soil column in a paddy field, and also relates to a device for collecting seepage in a paddy field, which is suitable for collecting seepage from an undisturbed soil column by hoisting Collect measurements. Background technique

[0002] With the excessive application of fertilizers in paddy fields, the pollution of paddy soil and groundwater has become increasingly prominent, and the study of pollutant migration and transformation has attracted more and more attention. Paddy field seepage is an important part of paddy field water consumption, and large soil columns (bottom area ≥ 2m 2 ) is an important means of simulating water migration and material flow in paddy fields, and the measurement of the amount and composition of large-scale soil column seepage is an e...

Claims

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