The influence factors and ranges of water requirements(WR),water consumptions(WC),water requirement rates(WRR),water consumption rates(WCR) and water use efficiencies(WUE) of alfalfa(Medicago sativa L.) were studied.

• 为明确紫花苜蓿Medicago sativa的需水量、耗水量、需水强度、耗水强度和水分利用效率的影响因子和范围,对其进行了较为详尽地探讨。