| 陈玉娟.EM38大地电导仪的应用研究[J].干旱地区农业研究,2004,(2):146~148 |
| EM38大地电导仪的应用研究 |
| The application of EM38 conductivity gauge in the measurement of soil salt |
| |
| DOI：10.7606/j.issn.1000-7601.2004.02.31 |
| 中文关键词: EM38 大地电导仪 耕层 含盐量 测定 |
| 英文关键词:EM38 conductivity gauge plough layer salt content |
| 基金项目:甘肃省自然科学基金(YS981-A21-024) |
|
| 摘要点击次数: 46 |
| 全文下载次数: 23 |
| 中文摘要: |
| EM38大地电导仪能快速、便捷的进行土壤含盐量的测定,EM38仪器的电磁感应灵敏度随仪器距地高度的增加而减小。EM38的EMv、EMh与5～15cm、15～25cm土层含盐量的相关性要高于与0～5cm土层含盐量的相关性;以EM38仪器在距地表20cm时的EMh、距地表100cm以下的EMv,建立对耕层含盐量的测定模型,能较为准确地对耕层含盐量进行测定。为提高准确度,除含盐量以外,要确保其它各因素的相对一致性。 |
| 英文摘要: |
| The EM38 conductivity gauge can be applied to observe soil salt content in the fields rapidly and easily. With the increase of its distance above the ground, the electromagnatism induction sensitivity of the gauge is reduced. The EMv and EMh values measured by EM38 are related more greatly to the salt contents in 515 cm and 1525 cm soil layer than to those in 05 cm soil layer. Using the EMh at the height of 20 cm and the EMv at the height of 100 cm, the measurement models of salt content are established, which can be used to survey the salt content in the plough layer. In order to raise the accuracy of the EM38 gauge, all environmental factors except for salt should be kept relatively consistent. |
| 查看全文 查看/发表评论 下载PDF阅读器 |