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:100724929(2004)02200282021,1,2,3(1.,450002;2.,450053;3.,463000):,,,,:;;;;;:S152.7:A,()(),,,1(SA),,,,,,2()(),(),,,,,,,,,,:TEN,,,,,,,,,,,,,,,,,,3(NeutronProbe),:2003212222:(19772),,8220042,(),,,,,,,,4Sentry,MPTRASETRIMEEnviroscanTDR(TimeDomainReflectometry),,TDR,,,TRASETRIMEEnviroscan(),,SentryTRIME;Enviroscan,Enviroscan,TRASE,,TRASETRIME,;Sentry,TRASE,SentryTRIMEEnviroscanSentryTRIMEEnviroscan,,TRASE,Aquaterr,,,,;Aquaterr,ThetaProbe,,13.335cm,3.81cm,4,5.715cm,,,()()ThetaProbe,,,,ThetaProbe,5,,FDRSWRSMPTSCFDR(FrequencyDomainReflectometry),,,,,,,,SWRSMPTSC()SWRSMP(),TDRNP,,;,,;,;,,,;TDRNP,,TSCSMPLCD,,,,,,SMPDATALOGGER,,,,,,,[1].[M].:,1999.[2]BlaineHanson.SoilMoistureInstruments[J].IrrigationJournal,1999,49(3):14-15.[3].[M].:,1999.[4].[M].:,1988.[5].[M].:,2000.[6],,.SMP-01[J].,2002,(1).[7],.[J].,2003,(10).92