地下暗管灌溉,以往又简称为渗灌,是利用埋设在地下的透水管道,将灌溉水直接送入作物根层土壤的一种灌水方法。由于它能使土壤保持非饱和状态,所以既省水又给作物创造了水、气、热相协调的良好环境,促使作物获得高产。在一定的土壤条件下,渗灌具有显著的优点。但是也存在一些技术上和理论上的问题尚未解决。本文目的是对渗灌水平进行一般性评述,并试图说明它的机理和效果。 Underground pipe irrigation, formerly referred to as the infiltration, is the use of buried underground permeable pipe, the irrigation water directly into the crop roots of a soil irrigation method. Because it can keep the soil in a non-saturated state, it not only saves water but also creates a favorable environment for the crop to be coordinated by water, gas and heat so as to promote high yield of crops. Under certain soil conditions, seepage irrigation has significant advantages. But there are also some technical and theoretical problems that remain unresolved. The purpose of this paper is to give a general review of the level of seepage and to try to explain its mechanism and effectiveness.