Mobile TDR for geo-referenced measurement of soil water content and electrical conductivity

作者: Anton Thomsen , Kirsten Schelde , Per Drøscher , Flemming Steffensen

DOI: 10.1007/S11119-007-9041-1

关键词:

摘要: The development of site-specific crop management is constrained by the availability sensors for monitoring important soil and related conditions. A mobile time-domain reflectometry (TDR) unit geo-referenced measurements has been developed used detailed mapping water content electrical conductivity within two research fields. Measurements made during early or late season, when moisture levels are close to field capacity, amount plant available texture. Combined closely clay silt fractions a variable field. application season content, presented. maps be automated delineation units. Based on spatial analysis measurements, recommendations with respect sampling strategies. Depending variability given area, between 15 30 ha can mapped sufficient detail 8 h.

参考文章(13)
D.W. Lamb, R.B. Brown, PA—Precision Agriculture: Remote-Sensing and Mapping of Weeds in Crops Journal of Agricultural Engineering Research. ,vol. 78, pp. 117- 125 ,(2001) , 10.1006/JAER.2000.0630
Ruth Kerry, Margaret A. Oliver, Variograms of Ancillary Data to Aid Sampling for Soil Surveys Precision Agriculture. ,vol. 4, pp. 261- 278 ,(2003) , 10.1023/A:1024952406744
T. J. Heimovaara, Design of Triple-Wire Time Domain Reflectometry Probes in Practice and Theory Soil Science Society of America Journal. ,vol. 57, pp. 1410- 1417 ,(1993) , 10.2136/SSSAJ1993.03615995005700060003X
Niels H Broge *, Anton G Thomsen, Mogens H Greve, Prediction of topsoil organic matter and clay content from measurements of spectral reflectance and electrical conductivity Acta Agriculturae Scandinavica Section B-soil and Plant Science. ,vol. 54, pp. 232- 240 ,(2004) , 10.1080/09064710410035668
G. C. Topp, J. L. Davis, A. P. Annan, Electromagnetic determination of soil water content: Measurements in coaxial transmission lines Water Resources Research. ,vol. 16, pp. 574- 582 ,(1980) , 10.1029/WR016I003P00574
D. A. Robinson, S. B. Jones, J. M. Wraith, D. Or, S. P. Friedman, A Review of Advances in Dielectric and Electrical Conductivity Measurement in Soils Using Time Domain Reflectometry Vadose Zone Journal. ,vol. 2, pp. 444- 475 ,(2003) , 10.2136/VZJ2003.4440
Dan S. Long, Jon M. Wraith, Greg Kegel, A heavy-duty time domain reflectometry soil moisture probe for use in intensive field sampling Soil Science Society of America Journal. ,vol. 66, pp. 396- 401 ,(2002) , 10.2136/SSSAJ2002.3960
J. M. Baker, R. R. Allmaras, System for Automating and Multiplexing Soil Moisture Measurement by Time‐Domain Reflectometry Soil Science Society of America Journal. ,vol. 54, pp. 1- 6 ,(1990) , 10.2136/SSSAJ1990.03615995005400010001X
J.P Tyndale-Biscoe, G.A Moore, A.W Western, A system for collecting spatially variable terrain data Computers and Electronics in Agriculture. ,vol. 19, pp. 113- 128 ,(1998) , 10.1016/S0168-1699(97)00038-0