Method for determining and analyzing pore structure of saline-alkali soil

A technology of pore structure and measurement method, applied in the analysis of suspensions and porous materials, analysis of materials, permeability/surface area analysis, etc., can solve problems such as soil measurement that cannot have large pore properties

Inactive Publication Date: 2018-04-20
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a non-disturbance and non-destructive method for measuring the pore structure of saline-alkali soil and its application, so as to solve the problem that the existing technology cannot measure the soil with large pore properties without destroying the soil

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  • Method for determining and analyzing pore structure of saline-alkali soil
  • Method for determining and analyzing pore structure of saline-alkali soil
  • Method for determining and analyzing pore structure of saline-alkali soil

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Embodiment 1

[0060] A method for measuring and analyzing the pore structure of saline-alkali soil. The soil sampling container is a PVC hard pipe with an inner diameter of 11 cm, a length of 40 cm, and a pipe wall thickness of 0.5 cm. One end is ground into a knife-edge. The test site is located in Dafeng Nature Reserve (32°59’N, 120°49’E) in Yancheng, Jiangsu Province. The soil tested was natural saline-alkali soil for Jerusalem artichoke planting - no human disturbance (no fertilization, no irrigation) except grass mowing before Jerusalem artichoke seeding. The soil was plowed using conventional mold boards. Jerusalem artichoke has been grown on natural saline-alkali land for 8 years (row spacing 60cm, plant spacing 40cm). Plant at the end of March every year and harvest at the end of November. Jerusalem artichoke planting areas were classified as high-salt (>4.0 g salt kg- 1 Soil), medium salt (2.0-4.0g salt kg- 1 Soil) and low salt (1.0-2.0g salt kg- 1 earth).

[0061] Select a h...

Embodiment 2

[0064] A method for measuring and analyzing the pore structure of saline-alkali soil. The soil sampling container is a PVC hard pipe with an inner diameter of 11 cm, a length of 40 cm, and a pipe wall thickness of 0.5 cm. One end is ground into a knife-edge. The test site is located in Dafeng Nature Reserve (32°59’N, 120°49’E) in Yancheng, Jiangsu Province. The soil tested was natural saline-alkali soil for Jerusalem artichoke planting - no human disturbance (no fertilization, no irrigation) except grass mowing before Jerusalem artichoke seeding. The soil was plowed using conventional mold boards. Jerusalem artichoke has been grown on natural saline-alkali land for 8 years (row spacing 60cm, plant spacing 40cm). Plant at the end of March every year and harvest at the end of November. Jerusalem artichoke planting areas were classified as high-salt (>4.0 g salt kg -1 Soil), medium salt (2.0-4.0g salt kg -1 Soil) and low salt (1.0-2.0g salt kg -1 earth).

[0065] Select a m...

Embodiment 3

[0068] A method for measuring and analyzing the pore structure of saline-alkali soil. The soil sampling container is a PVC hard pipe with an inner diameter of 11 cm, a length of 40 cm, and a pipe wall thickness of 0.5 cm. One end is ground into a knife-edge. The test site is located in Dafeng Nature Reserve (32°59’N, 120°49’E) in Yancheng, Jiangsu Province. The soil tested was natural saline-alkali soil for Jerusalem artichoke planting - no human disturbance (no fertilization, no irrigation) except grass mowing before Jerusalem artichoke seeding. The soil was plowed using conventional mold boards. Jerusalem artichoke has been grown on natural saline-alkali land for 8 years (row spacing 60cm, plant spacing 40cm). Plant at the end of March every year and harvest at the end of November. Jerusalem artichoke planting areas were classified as high-salt (>4.0 g salt kg -1 Soil), medium salt (2.0-4.0g salt kg -1 Soil) and low salt (1.0-2.0g salt kg -1 earth).

[0069] Select a l...

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Abstract

The invention relates to a method for determining and analyzing a pore structure of saline-alkali soil, and belongs to the field of soil structure determination and analysis method. The invention aimsto provide the method for determining the pore structure of the saline-alkali soil with no disturbance and no destruction and an application thereof, so as to solve the problem in the prior art thatsoil with macropore property cannot be measured under a condition without destroying soil. The method for determining and analyzing the pore structure of the saline-alkali soil includes the followingsteps: sample collection: selecting to-be-measured soil, knocking a sampling container into soil in a vertical direction, and collecting an original soil column; sample scanning: putting the originalsoil column into an X-ray computerized tomography scanner, and scanning; and image processing: inputting the scanned image of the cross section of the original soil column into a computer, and carrying out batch treatment on the image by the computer, to obtain the number and area of pores of the cross section of the original soil column. The spatial distribution of the macropore structure in thesoil column is more rapid, accurate and intuitive to determine and calculate.

Description

technical field [0001] The invention relates to a method for measuring and analyzing the pore structure of saline-alkali soil, and belongs to the field of measuring and analyzing methods for soil structure. Background technique [0002] Soil The unconsolidated layer of soil on the Earth's land surface that is fertile enough to support the growth of plants. Soil is a historical natural body that gradually develops and forms after a long soil-forming process under specific soil-forming conditions. Soil is the loose surface layer on the surface of the solid earth with life activities and material circulation and energy exchange between organisms and the environment. Soil is composed of minerals, animals and plants from weathering of rocks, organic matter produced by the decomposition of microbial residues, soil organisms (solid phase substances), water (liquid phase substances), air (gas phase substances), oxidized humus, etc. Solid matter includes soil minerals, organic matt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/088G01N2015/0833
Inventor 隆小华邵天韵熊迎军刘兆普赵耕毛
Owner NANJING AGRICULTURAL UNIVERSITY
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