植物水分利用率及其提高途径

WATER USE EFFICIENCY AND IMPROVEMENT WAY

植物水分利用率有不同范围，不同层次，不同水的概念，其最基本的是光合作用／蒸腾作用的比值，影响这两个过程的因素均能影响ＷＵＥ，提高途径主要有：作物种和品种的选择和改良、作物施肥、补充灌溉，应用化学物质等。

There are differental range,layer and concept of water in water use efficency,about WUE,photosynthese/transpiration is basic,WUE can be affected by the factors of two course,WUE is improved by the main way:the change of species and variety,fertilization,supplement irrigation,chemical material.