"需水量"是个多义词，它可以指需水量（满足一个地区发展所需要的水资源量。）,蒸腾系数。
需水量(water requirement)： 生产1g 干物质所需的水量，即经济林在整个生长期 或某一发育阶段所吸收的水分总量与该时期所生产的干物质总量的比 值。
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... 需水量 amount of water required 需求一览表 demand schedule 需求不足 scant demand ...
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灌溉需水量 irrigation requirement ; irrigation water requirement ; ETaw
作物需水量 [农学] crop water requirement ; CWR
田间需水量 farm water requirement ; water requirement of paddy field ; [农学] field water demand ; [农学] field water requirement
罪需水量 duty of water
总需水量 total water requirements ; Water requirement gross
净需水量 net water requirement ; Water requirement net
消防需水量 fire demand ; fire demand of water
插秧期需水量 water requirement in transplantation
需水量比 ratio of wate demand
许多人试图通过减少灌溉频率或改种需水量更少的作物来节约用水。
Many have been attempting to conserve water by irrigating less frequently or by switching to crops that require less water.
一般来说，食物能够提供每天需水量的20%左右。
On average, food provides about 20 percent of total water intake.
一般来说，食物能够提供每天需水量的20%左右。
On average food provides about 20 percent of total water intake.
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