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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (33): 127-134.doi: 10.11924/j.issn.1000-6850.casb17070141

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Field Hydraulics Parameters Measured by Disc Tension Infiltrometer: Research Progress

  

  • Received:2017-07-28 Revised:2017-08-18 Accepted:2017-08-24 Online:2017-11-27 Published:2017-11-27

Abstract: Soil management has significant effect on physical properties, especially soil hydraulics parameters. The accurate measurement of soil hydraulics parameters has become an important research with computer model being widely used in the forecast of soil material migration. Disc tension infiltrometer as a simple and convenient instrument is widely used in soil hydraulics parameters measure. The researches at home andabroad studied the method of steady state, transient state and backstepping, and used disc tension infiltrometer to measure soil near saturated hydraulic conductivity, absorptivity and soil water retention curve. At the same time, this instrument could be used to measure soil pore distribution and the parameters in two-zone model. The authors summarized the research progress and application development of disc tension infiltrometer, and reviewed the problems in field operation to guide the field experiment to acquire more accurate data. Disc tension infiltrometer has advantages in soil pore measurement, especially in macropore, but its application in different soils in China is not wide.

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