Method for acquiring missing data of initial pH value of soil

A soil and soil acidification technology, applied in soil material testing, measuring devices, instruments, etc., can solve problems such as the inability to calculate the soil acidification rate, the inability to estimate the soil acidification rate, forecast and early warning of acidification trends, etc.
CN107228931AInactive Publication Date: 2017-10-03INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
Publication Date
2017-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for acquiring missing data of the initial pH value of soil. The method provided by the invention comprises the following steps: (1) measuring the current pH value and buffer capacity of to-be-detected soil, soil bulk density and the volume of a plough layer; (2) acquiring the pH<0> value of the to-be-detected soil; and (3) carrying out calculation according to the equation that a soil acidification rate in N years is equal to a product of the buffer capacity, the soil bulk density, the volume of the plough layer and the different between the pH<0> value and the current pH value, wherein the pH<0> value is the pH value of reference soil, and the reference soil is soil without human disturbance, i.e., soil meeting the following three conditions at the same time: (a1) the soil is within the coverage of a circle with the to-be-detected soil as a center and with a radius of 500 m; (a2) the parent materials, soil types and soil species of the soil and the to-be-detected soil are identical; and (3) the soil is free of human disturbance and fertilization, and no plant grows on the surface of the soil. The method provided by the invention has important application value in quantitative analysis of soil acidification rate and prediction and early warning of acidification.
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Description

technical field

[0001] The invention relates to a method for acquiring missing soil initial pH data. Background technique

[0002] Soil initial pH is a very important parameter in the study of soil acidification, and it is a reference to measure whether the soil is acidified or the degree of acidification. For example, by comparing the initial pH of the soil with the current pH, it is possible to determine whether a certain field or area is acidified or the difference in the degree of acidification, and then calculate the rate of soil acidification.

[0003] Soil acidification rate refers to the pH change per unit time caused by the unit volume of soil H + increase.

[0004] Soil acidification rate (AR) = (pH 初始 -pH 现在 )×(pHBC×BD×V) / T;

[0005] Among them, pH 初始 Indicates the initial pH value of the soil under study;

[0006] pH 现在 Indicates the current pH value of the soil under study;

[0007] pHBC represents the buffer capacity of the soil, that is, the amount of...

Claims

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