CAJ | 학술논문

为了解盐渍化对土壤电阻率的影响，本研究在室内设置了不同盐分类型、不同盐分浓度的土壤，采用四电极法对各处理的电阻率进行相应测定，分析了土壤含水量、含盐量和单、复盐构成对土壤电阻率的影响。研究结果表明：土壤电阻率随着含水量的增大而从16．08Ω?m 下降到4．25Ω?m ，呈对数函数下降；随盐分含量的增大呈幂函数下降，含 NaCl 盐分的土壤电阻率从2．04Ω?m 下降至0．20Ω?m ，含 Na2SO4盐分的土壤电阻率从2．89Ω?m 下降至0．39Ω?m ；不同盐分类型的构成对电阻率的影响同样存在显著差异，含盐量为0．1％时，碳酸盐、硫酸盐、氯化物盐、氯化物－硫酸盐作用下土壤的电阻率分别为4．40、3．64、2．05、2．25Ω?m ，碳酸盐对土壤电阻率影响明显；当含盐量分别为0．5％、1．0％、1．5％、2．0％时，硫酸盐对土壤电阻率影响显著，对应的硫酸盐土壤电阻率分别为 1．72、1．03、0．74、0．58Ω?m ，氯化物盐土壤电阻率分别为0．59、0．36、0．27、0．21Ω?m 。含水率和盐分总量是影响土壤电阻率的重要因素，电阻率随土壤中 NaCl 和 Na2SO4含量的增加均呈幂函数递减规律；单、复盐类型不同，对土壤电阻率的影响存在差异。
위료해염지화대토양전조솔적영향，본연구재실내설치료불동염분류형、불동염분농도적토양，채용사전겁법대각처리적전조솔진행상응측정，분석료토양함수량、함염량화단、복염구성대토양전조솔적영향。연구결과표명：토양전조솔수착함수량적증대이종16．08Ω?m 하강도4．25Ω?m ，정대수함수하강；수염분함량적증대정멱함수하강，함 NaCl 염분적토양전조솔종2．04Ω?m 하강지0．20Ω?m ，함 Na2SO4염분적토양전조솔종2．89Ω?m 하강지0．39Ω?m ；불동염분류형적구성대전조솔적영향동양존재현저차이，함염량위0．1％시，탄산염、류산염、록화물염、록화물－류산염작용하토양적전조솔분별위4．40、3．64、2．05、2．25Ω?m ，탄산염대토양전조솔영향명현；당함염량분별위0．5％、1．0％、1．5％、2．0％시，류산염대토양전조솔영향현저，대응적류산염토양전조솔분별위 1．72、1．03、0．74、0．58Ω?m ，록화물염토양전조솔분별위0．59、0．36、0．27、0．21Ω?m 。함수솔화염분총량시영향토양전조솔적중요인소，전조솔수토양중 NaCl 화 Na2SO4함량적증가균정멱함수체감규률；단、복염류형불동，대토양전조솔적영향존재차이。
In order to know the impact of salinization on soil resistivity ,have put up the soil samples with different salt type and concentration and measured the electrical resistivity of eah treatment using the four -electrode method in lab-oratory ,also analyzed the impacts of soil water content ,salt concentration and single ,double salt composition on the soil electrical resistivity .The research results showed that :The soil electrical resistivity was decreased from 16 .08 Ω?m to 4 .25 Ω?m with increase of the soil moisture content assumed a logarithmic function ;and it was decreased with increase of the salt concentration assumed an exponential function .The soil electrical resistivity was decreased from 2 .04 Ω?m to 0 .20 Ω?m with NaCl ,it was decreased from 2 .89 Ω?m to 0 .39 Ω?m with Na2SO4 .The composition of different salt type still present notable difference on the soil electrical resistivity .When the salt content was 0 .1% ,under the action of carbonates ,sulfates ,chlorides and chloride-sulfate ,the soil resistivity was 4 .40 ,3 .64 ,2 .05 Ω?m and 2 .25 Ω?m , respectively .The carbonate had obvious effect on soil resistivity .When the salt content was 0 .5% ,1 .0% ,1 .5% and 2 .0% ,the sulfate had obvious effect on soil resistivity ,the relative soil resistivity was 1 .72 ,1 .03 ,0 .74 Ω?m and 0 .58 Ω?m ,respectively ,and for the chlorides salt ,the soil resistivity was 0 .59 ,0 .36 ,0 .27 Ω?m and 0 .21 Ω?m ,re-spectively .The soil moisture content and the total amount of salt were the important factors affecting soil resistivity .The soil resistivity was assumed a power function decrease with the increase of the NaCl and Na 2SO4 content ;The different salt types of single and double ,existed different impact on soil resistivity .