| 应用时域反射仪测定农田土壤水分 |
| |
| 引用本文： | 龚元石,李子忠.应用时域反射仪测定农田土壤水分[J].水科学进展,1997,8(4):329-334. |
| |
| 作者姓名： | 龚元石 李子忠 |
| |
| 作者单位： | 中国农业大学农业水管理研究所 北京100094 |
| |
| 基金项目： | 国家自然科学基金“八·五”重大项目(No.49391600);国家自然科学青年基金资助项目(No.49401008) |
| |
| 摘 要： | 介绍了时域反射仪(TDR)测定农田土壤水分的方法及其应用,包括测定农田根系层土壤含水量和一定深度范围内土体贮水量,TDR自动、连续监测土壤水分,用TDR实测土壤水分来估算作物不同生长发育期内农田实际蒸散量以及用于探讨农田水分空间变异性。还对TDR、中子仪和土钻法测定的土壤含水量进行了比较,结果表明,应用TDR测定农田土壤水分要优于中子仪和土钻法。
|
| 关 键 词： | 时域反射仪 测定 农田土壤水分 |
| 收稿时间： | 1996-05-27 |
Measurement of Field Soil Water by Using Time Domain Reflectometry |
| |
| Gong Yuanshi,Li Zizhong,Liao Chaozi,Li Chunyou.Measurement of Field Soil Water by Using Time Domain Reflectometry[J].Advances in Water Science,1997,8(4):329-334. |
| |
| Authors: | Gong Yuanshi Li Zizhong Liao Chaozi Li Chunyou |
| |
| Affiliation: | Institute for Agricultural Water Management of China Agricultural University, Beijing 100094 |
| |
| Abstract: | A techique to measure the field soil water by using Time Domain Reflectometry(TDR)and its applications are introduced in this paper,including determing soil water content in the root zone and soil water storage for the soil profile;automatic and continuous monitoring soil moisture.The measured soil water can be used to estimate evapot ranspiration in the crop growth season and to evaluate the spatial variability of soil moisture in the field.The three methods of TDR, neutron probe and soil sampling are compared in measuring soil water content.The results showed that the TDR is superior to the other two methods for measuring the field soil water. |
| |
| Keywords: | time domain reflectometry measurement field soil water |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
|
点击此处可从《水科学进展》下载全文 |
