EM38大地电导仪的应用研究被引量：23

The application of EM38 conductivity gauge in the measurement of soil salt

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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。 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 5~15 cm and 15~25 cm soil layer than to those in 0~5 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.

作者陈玉娟

机构地区新疆塔里木农垦大学植科院

出处《干旱地区农业研究》 CSCD 北大核心 2004年第2期146-148,共3页 Agricultural Research in the Arid Areas

基金甘肃省自然科学基金(YS981-A21-024)

关键词 EM38大地电导仪耕层含盐量农田盐渍化 EM38 conductivity gauge plough layer salt content

分类号 S156.4 [农业科学—土壤学]

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参考文献2

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二级参考文献8

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