| A new resistance sensor for monitoring soil matric potential | |
| Xin, X. L.; Xu, F. A.; Zhang, J. B.; Xu, M. X. | |
| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 2007-05-01 | |
| 卷号 | 71期号:3页码:866-871 |
| ISSN号 | 0361-5995 |
| 通讯作者 | Zhang, J. B.(jbzhang@issas.ac.cn) |
| 英文摘要 | The electrical resistance sensor is an appropriate and inexpensive tool for measuring soil matric potential (psi). These sensors are widely used in irrigation agriculture. One drawback of the resistance sensors, however, is that the measurements often are not accurate across a wide range of moisture conditions. The objective of this study was to design a resistance sensor that can measure accurately and precisely across a wide range of moisture conditions, thereby extending the measurement capabilities of currently available sensors. The sensor consists of two electrodes embedded in a sand-plaster matrix that is stabilized with polyacrylamide. The sensor was calibrated and tested to determine its sensitivity to soil texture, temperature, and electrical conductivity. Experimental results showed that the sensor was able to determine matric potentials in the range of -7.5 kPa to - 10 MPa, and showed excellent precision, with a RMSE < 5 kPa across the range of - 5 to - 80 kPa. A standard electrical resistance-water potential curve can be established in the laboratory on a soil, and can then be applied to different soil types. |
| 收录类别 | SCI |
| WOS关键词 | TIME-DOMAIN REFLECTOMETRY ; VADOSE ZONE ; WATER ; IRRIGATION ; TEMPERATURE ; TENSIOMETER ; CALIBRATION ; MANAGEMENT ; MODEL |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SOIL SCI SOC AMER |
| WOS记录号 | WOS:000246602500028 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558652 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, J. B. |
| 作者单位 | Chinese Acad Sci, State Expt Stn Agroecosyst Fengqiu, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xin, X. L.,Xu, F. A.,Zhang, J. B.,et al. A new resistance sensor for monitoring soil matric potential[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2007,71(3):866-871. |
| APA | Xin, X. L.,Xu, F. A.,Zhang, J. B.,&Xu, M. X..(2007).A new resistance sensor for monitoring soil matric potential.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,71(3),866-871. |
| MLA | Xin, X. L.,et al."A new resistance sensor for monitoring soil matric potential".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 71.3(2007):866-871. |
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