EVALUATION OF THE CAPACITANCE TECHNIQUE AS A METHOD FOR DYNAMICALLY MEASURING SOIL-WATER CONTENT

被引：45
|
作者：
WHALLEY, WR
DEAN, TJ
IZZARD, P
机构：
[1] DIDCOT INSTRUMENT CO LTD,ABINGDON OX14 3LD,OXON,ENGLAND
[2] INST HYDROL,WALLINGFORD OX10 8BB,OXON,ENGLAND
来源：
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH | 1992年 / 52卷 / 02期
关键词：
D O I：
10.1016/0021-8634(92)80056-X
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A capacitative sensor that can be used to measure soil water content from a moving tractor is described. The sensor was shaped similar to a narrow tine consisting of two capacitor electrodes separated by an insulator. The capacitor formed part of an oscillator with a frequency of around 150 MHz, which reduced with increasing soil water content. The sensor was found to give calibrations that were affected to a certain extent by soil bulk density. © 1992 Silsoe Research Institute.
引用
收藏
页码：147 / 155
页数：9
相关论文
共 50 条
  • [1] A field test of an electrical-capacitance method for measuring soil-water content
    Vandiver, DW
    Kirsch, SW
    [J]. PHYSICAL GEOGRAPHY, 1997, 18 (01) : 80 - 87
  • [2] EVALUATION OF THE HOT AIR METHOD FOR MEASURING SOIL-WATER DIFFUSIVITY
    VANGRINSVEN, JJM
    DIRKSEN, C
    BOUTEN, W
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1985, 49 (05) : 1093 - 1099
  • [3] THE TIME-DOMAIN REFLECTOMETRY METHOD FOR MEASURING SOIL-WATER CONTENT AND SALINITY
    DALTON, FN
    VANGENUCHTEN, MT
    [J]. GEODERMA, 1986, 38 (1-4) : 237 - 250
  • [4] SOIL-WATER CONTENT - MICROWAVE OVEN METHOD
    MILLER, RJ
    SMITH, RB
    BIGGAR, JW
    [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1974, 38 (03) : 535 - 537
  • [5] VARIABILITY OF SOIL-WATER TENSION AND SOIL-WATER CONTENT
    HENDRICKX, JMH
    WIERENGA, PJ
    NASH, MS
    [J]. AGRICULTURAL WATER MANAGEMENT, 1990, 18 (02) : 135 - 148
  • [6] Calibration of a capacitance system for measuring water content of tropical soil
    Polyakov, V
    Fares, A
    Ryder, MH
    [J]. VADOSE ZONE JOURNAL, 2005, 4 (04) : 1004 - 1010
  • [7] MEASUREMENT OF NEAR-SURFACE SOIL-WATER CONTENT USING A CAPACITANCE PROBE
    ROBINSON, M
    DEAN, TJ
    [J]. HYDROLOGICAL PROCESSES, 1993, 7 (01) : 77 - 86
  • [8] EVALUATION OF A CAPACITANCE SENSOR FOR MONITORING SOIL WATER CONTENT
    Cruz, Tadeu M. L.
    Teixeira, Adunias dos S.
    Canafistula, Francisco J. F.
    dos Santos, Clemilson C.
    de Oliveira, Antonio D. S.
    Daher, Sergio
    [J]. ENGENHARIA AGRICOLA, 2010, 30 (01): : 33 - 45
  • [9] TIME DOMAIN REFLECTOMETRY FOR MEASURING SOIL-WATER CONTENT IN RANGE SURVEYS
    REEVES, TL
    SMITH, MA
    [J]. JOURNAL OF RANGE MANAGEMENT, 1992, 45 (04): : 412 - 414
  • [10] EFFECT OF TILLAGE SYSTEMS ON THE VARIABILITY OF SOIL-WATER TENSIONS AND SOIL-WATER CONTENT
    KANWAR, RS
    [J]. TRANSACTIONS OF THE ASAE, 1989, 32 (02): : 605 - 610
12345