| 扬州地区TDR法田间测定不同土壤含水量的标定 |
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| 引用本文： | 吴华山,陈明,杭天文,毛伟,张富春. 扬州地区TDR法田间测定不同土壤含水量的标定[J]. 灌溉排水学报, 2009, 0(4) |
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| 作者姓名： | 吴华山 陈明 杭天文 毛伟 张富春 |
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| 作者单位： | 扬州市土壤肥料站; |
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| 基金项目： | 农业部耕地质量监测建设专项经费资助项目 |
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| 摘 要： | 使用美国Spectrum TDR 100便携式水分测定仪,在扬州地区不同土壤,找出TDR法和烘干法测定土壤含水量之间的关系。通过试验证明,容重在1.3 g/cm3处TDR测定值接近真实值,容重越小或越大,其偏差就越大。粘粒含量为0~200 g/kg,砂粒含量在300~500 g/kg范围内,TDR测定值接近于烘干法。利用TDR测定土壤水分,砂土和壤土可以不用调整,而粘壤土和粘土要进行系数换算,粘壤土的测定结果要除以1.18,粘土的测定结果要除以1.44。
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| 关 键 词： | TDR 土壤含水量 标定 |
Calibration on Measurement of Soil Water Content Using Time Domain Reflectometry(TDR) in Yangzhou Area |
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| WU Hua-shan,CHEN Ming,HANG Tian-wen,MAO Wei,ZHANG Fu-chun. Calibration on Measurement of Soil Water Content Using Time Domain Reflectometry(TDR) in Yangzhou Area[J]. Journal of Irrigation and Drainage, 2009, 0(4) |
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| Authors: | WU Hua-shan CHEN Ming HANG Tian-wen MAO Wei ZHANG Fu-chun |
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| Affiliation: | Yangzhou Soil Fertilization Station;Yangzhou City;Yangzhou 225101;China |
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| Abstract: | The relationship between drying method and TDR method on different soils was studied in Yangzhou area by Sepctrum TDR 100.The experiment proves that measured value is close to true value while the soil bulk density is about 1.3 g/cm3;when the soil bulk density is lager or smaller,deviation would be larger.TDR measured value is closed to oven drying method when clay content is 0~200 g/kg and sand content is 300~500 g/kg.TDR can be directly used in the soil water content measurement on the sand and the loam,b... |
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| Keywords: | TDR soil water content calibration |
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