摘要
用美国 Wescor公司生产的 PCT- 5 5热电偶土壤湿度传感器和 HR- 33T微伏计对黄土区 2种典型土壤的水势进行了测定试验研究 ,并与压力膜法测定的土壤持水曲线进行了比较。结果表明 ,热电偶土壤湿度计有测定土壤水势范围广、使用方便。
Water potential of two typical soils in loess is measured and studied with PCT 55 thermocouple psychrometer and HR 33T millvoltmeter manufactured by Wescor Corporation in USA,and the measurement results of soil water characteristic curve is compared with the method of soil moisture pressure membrane.The results show that thermocouple psychrometer has the advantage of large measurement range,simple handling and high resolution,so it is suitable for dynamic measurement of soil water potential in field.
出处
《西北农业大学学报》
CSCD
北大核心
2001年第1期55-58,共4页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
关键词
土壤水势
热电偶湿度计
微伏计
压力膜法
测定方法
soil water potential
thermocouple psychrometers
millvoltmeter
method of soil moisture pressure membrane
