高压流速仪测定植物导水率方法探讨  

A Probe into the Method of Measuring Plants' Hydraulic Conductivity with High Pressure Flow Meter(HPFM)

作　　者：张志亮[1] 张富仓[2] 郑彩霞[1] 李志军[2] 倪福全[1] 

机构地区：[1]四川农业大学信息与工程技术学院,四川雅安625014 [2]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100

出　　处：《中国农村水利水电》2009年第9期12-15,18,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(50579066)

摘　　要：高压流速仪(High Pressure Flow Meter简称HPFM)作为一种新型的测定植物导水率的技术,已在国外得到广泛的应用,近年来在国内也逐步使用。就其试验原理和测定方法进行了详细的阐述,对HPFM较常规测定导水率方法的一些先进优势(便携、测定速度快、精度高、范围广等)进行了举例说明;同时HPFM在实践中也显露出其不足之处,对其测定中存在的一些问题进行了探讨。就其压力耦合器存在的问题提出了相应的改进建议,并列举了试验测定过程中需要注意的问题。High pressure flow meter is one of the new technologies used to measure plants＇hydraulic conductivity. HPFM have been widely used at home and abroad in recent years. This paper addresses the experimental principle and measurement method, examples to illustrate advantage of HPFM in contrast to conventional ways, such as portability, rapid measuring speed, high precision and wide range and so on. Meanwhile, some disadvantages of HPFM appear in practice. Finally, several suggestions are made for further improvement and perfection of compression coupling and some problems existing in measuring are discussed.

关 键 词：高压流速仪 植物 导水率 

分 类 号：Q945.17[生物学—植物学]