北京地区草坪耗水量测定方法及需水量浅析

根据多年蒸发耗水量观测和研究的经验 ,针对首都绿地建设中草坪耗水问题 ,提出了采用供水式蒸发器和注水式蒸发器最适合草坪耗水量的测定的结论。同时 ,分析得出 ,北京地区草坪全年的需水量为 772 .0mm。根据该地区多年平均降水量和草坪需水量分析 ,年平均缺水量为 12 3 .0mm。

Measuring Method of Water Consumption and Water Requirement of Lawn in Beijing Area

The authors demonstrated that the small lysimeter with water supplying system and the small lysimeter with affusion system are the most suitable methods for measuring water consumption of lawn in Beijing area in aiming at the water consumption problem in capital region according to their experiences of observation and research of water consumption for many years. It is analyzed that the maximun annually water requirement of lawn is 772.0 mm. The authors also analyzed that average annually shortage of water is 123.33 mm according to the average quantities of annually precipitation and annually water requirement of lawn.