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Calculation method and grading method of soil physical property comprehensive property parameters

A technology of physical properties and calculation methods, applied in the field of soil science, can solve problems such as the inability to fully reflect the comprehensive properties of soil physical properties and the influence of soil physical properties on crop growth

Active Publication Date: 2020-12-04
TARIM UNIV
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Problems solved by technology

[0003] The purpose of this invention is to solve the problem that the traditional parameters representing the quality of soil physical properties cannot fully reflect the comprehensive characteristics of soil physical properties and the impact of soil physical properties on crop growth Technical problem, providing a calculation method and classification method for the comprehensive performance parameters of soil physical properties

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  • Calculation method and grading method of soil physical property comprehensive property parameters
  • Calculation method and grading method of soil physical property comprehensive property parameters
  • Calculation method and grading method of soil physical property comprehensive property parameters

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specific Embodiment approach 1

[0011] Specific implementation mode one: the calculation method of soil physical properties comprehensive character parameter in the present implementation mode is as follows:

[0012]

[0013] In the formula, θ is the volumetric water content of the soil, in cm 3 cm -3 , θ s is the saturated water content of the soil, in cm 3 cm -3 , SPQ is the soil physical quality parameter, h is the soil water suction corresponding to θ, the unit is kPa.

[0014] theoretical analysis:

[0015] The correlations between SPQ and bulk density, pore properties (structure), water availability, and clay content are as follows:

[0016] ① Bulk density (D b ) and θs are:

[0017] θ s =(1-D b / 2.65) (2)

[0018] Soil moisture absorption coefficient (w h ,g g -1 ) is one of the soil moisture constants, and the w of a certain soil h is a fixed value, and its corresponding water suction value is 3100kPa, w h The corresponding volumetric water content is θ h , whose calculation formu...

specific Embodiment approach 2

[0047] Specific embodiment two: the grading method of described soil physical properties comprehensive character parameter is as follows:

[0048] According to the calculation result of specific implementation mode one, wherein SPQ≥0.10, the comprehensive properties of soil physical properties are excellent; 0.10>SPQ≥0.055, the comprehensive properties of soil physical properties are good; 0.055>SPQ≥0.03, the comprehensive properties of soil physical properties are poor; 0.03>SPQ, the comprehensive properties of soil physical properties are extremely poor.

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Abstract

The invention discloses a calculation method and a grading method of soil physical property comprehensive character parameters, relates to a soil physical quality calculation method and a grading method, and belongs to the technical field of soil science. The invention aims to solve the technical problem that traditional parameters representing the physical properties of soil cannot comprehensively reflect the comprehensive properties of the physical properties of the soil and the influence of the physical properties of the soil on crop growth. According to the calculation method, when SPQ islarger than or equal to 0.10, the soil physical property comprehensive character is excellent; when SPQ is smaller than 0.10 and is greater than or equal to 0.055, the soil physical property comprehensive character is good; when SPQ is smaller than 0.055 and more than or equal to 0.03, and the soil physical property comprehensive character is poor; when SPQ is smaller than 0.03, the soil physicalproperty comprehensive character is extremely poor. The method can comprehensively reflect the comprehensive properties of the physical properties of the soil and the influence of the physical properties of the soil on the growth of crops, and can grade the comprehensive properties of the physical properties of the soil.

Description

technical field [0001] The invention relates to a soil physical quality calculation method and a classification method, belonging to the technical field of soil science. Background technique [0002] The traditional parameters that indicate the quality of soil physical properties mainly include indicators such as bulk density, pore properties (structural), water availability, and clay content (texture). However, these indicators can only reflect a certain aspect of soil physical properties, and cannot fully reflect the comprehensive properties of soil physical properties and the impact of soil physical properties on crop growth. Contents of the invention [0003] The purpose of the present invention is to solve the technical problem that the traditional parameters indicating the quality of soil physical properties cannot fully reflect the comprehensive properties of soil physical properties and the impact of soil physical properties on crop growth, and provide a calculatio...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24G01N33/245
Inventor 迟春明周燕卜东升
Owner TARIM UNIV
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