沟灌是我国地面灌溉中普遍应用于中耕作物的一种较好的灌水方法。沟灌首先要在作物行间开挖灌水沟，灌溉水由输水沟或毛渠进入灌水沟后，在流动的过程中，主要借土壤毛细管作用从沟底和沟壁向周围渗透而湿润土壤。优点是不破坏土壤结构，节省水量，常应用于棉花、玉米、甘蔗等宽行距耕作物的灌溉。
简述的沟灌原理也适用于相近的灌水方法。
Principles outlined for furrow irrigation apply to related methods of irrigation.
沟灌耕层土壤蒸发损失的水分大于滴灌大于渗灌。
Compared with dripping and seeping irrigation, evaporation loss of water from topsoil is the most in furrow irrigation.
宽垄沟灌作为一种大田作物栽培灌水方式已逐步受到关注。
As a cultivation and irrigation method for field crops, wide ridge and furrow irrigation have already been paid attention gradually.
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