Method for determining soil moisture and its modified device

A soil moisture and soil technology, applied in the fields of forestry and ecology, soil science, and agronomy, can solve the problems of inconvenient surface water content and high price, and achieve the effect of simple structure, low cost and simple method.

Inactive Publication Date: 2008-07-02
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, compared with TRIME EZ/EZC and IT/ITC soil moisture meters, TRIME T3 soil m...

Method used

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  • Method for determining soil moisture and its modified device
  • Method for determining soil moisture and its modified device
  • Method for determining soil moisture and its modified device

Examples

Experimental program
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Embodiment

[0052] Taking the measurement of soil moisture heterogeneity of artificial sand-fixation forest in Zhanggutai sandy land in Liaoning Province as an example, the 29-year-old Pinus sylvestris sylvestris plantation in Zhanggutai Sunjiakeng (42°39′N, 122°33′E) was used as an example. For the research object, 5 different density groups and 1 open space (control) were selected from 50 densities as the standard plots of the whole experiment (6 standard plots in total), and TDR (TRIME-EZ type soil) was used in each standard plot. Moisture meter) measures soil moisture at depths from 0 to 150 cm, measuring once every 15 cm, divided into 7 levels, and setting two repetitions for each standard. The specific design of the test site is as follows: Figure 4 , 5(a) -shown in (b).

[0053] Choose 6 places near the center of the 4 trees on the standard ground to bury PVC pipes at approximately the same distance from the 4 trees. The method is to use an earth drill to design holes according ...

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Abstract

The invention relates to a method for measuring soil moisture content and an improved device thereof, belonging to the technical field of soil moisture content measurement in soil science, agriculture, forestry and ecology. Based on the existing TRIME EZ/EZC and TRIME IT/ITC type soil moisture content measuring device for measuring soil moisture content, the inventive improved device is arranged with an extended pipe sleeve for connecting with a sensor of the soil moisture content measuring device, an improved hole puncher and PVC pipes with different lengths, wherein, the hole puncher comprises hole puncher sensors, a stainless steel tube arranged at one end of the hole puncher sensor, a positioning plug sheathed on the stainless steel tube and a sliding valve sheathed on the hole puncher sensor arranged at the other end of the hole puncher. The soil moisture content measuring device is used to measure soil moisture content after the hole puncher probe perforates. Based on the existing soil moisture content measuring device, which can only measure topsoil moisture content and can not measure deep soil moisture content until digging a sloping surface, the inventive device can perform fixed point measurement of soil moisture content at different depths for a long term. The invention has the advantages of simple structure, low manufacturing cost, simple method and easy operation.

Description

technical field [0001] The invention belongs to the field of soil science, agronomy, forestry and ecology etc. to measure the technology of soil moisture content, specifically a kind of time-space heterogeneity for measuring soil moisture (time-space heterogeneity includes space heterogeneity and time heterogeneity) ) method and its improved device. Background technique [0002] Moisture is an important part of soil. It not only affects the physical properties of soil, restricts the dissolution and transfer of nutrients and solvents in soil, and the activity of microorganisms, but also is an important factor that constitutes soil fertility and soil properties. Therefore, accurate determination of soil moisture is of great significance both in theory and in production. The drying method is the most commonly used method, and it is also a classic method of soil moisture determination. It is simple and easy to implement, and has sufficient accuracy; however, the drying method i...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01N35/00
Inventor 朱教君康宏樟于立忠
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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