热平衡式茎流计在测定植物蒸腾耗水中的应用进展

Application Progress of Heat Balance Stem-flow Gauge in Measuring Plant Transpiration Water Consumption

热平衡式茎流计是用于测量植物蒸腾耗水速率的仪器,该茎流计以其精确、方便、无损和数字化等优点已经得到广泛的应用和比较深入的研究。旨在对近年来热平衡式茎流计在国内测定植物蒸腾耗水中的运用和发展进行相关的分析和讨论,为以后科学地运用和方法的改进提供理论依据。分析了热平衡茎流计的工作原理,归纳了植物液流速率日、生长季的变化规律,总结了植物蒸腾速率的影响因素,对热平衡式茎流计的应用做了详细的介绍,最后提出了热平衡式茎流计在实际应用中的优点、注意的问题和发展展望。

Heat balance stem-flow gauge is an instrument used for measuring the plant transpiration water consumption rate. This kind of stem-flow gauge has been applied widely and studied thoroughly because of its advantages including accuracy, convenience, lossless and digitalization. This paper aimed to analyze and discuss the application and development of heat balance stem-flow gauge in determination of transpiration water consumption in China in recent years, and provide a theoretical basis for the scientific use and the improvement of method. This paper analyzed the working principle of heat balance stem-flow gauge, summarized the changing regularity of plant sap flow rate in date and growth seasons, condensed the influence elements of plant transpiration rate and introduced the application of heat balance stem-flow gauge in detail. At last, the advantages, attentions and development prospects in practical application were presented.