有控制的小量频繁施水灌溉方法的主要优点之一,就是可以避免地表积水,它是通过施水量来控制入渗率,而不是通过土壤本身,在非均质土壤中,也可以获得高度均匀的入渗。很明显,只有滴灌和喷灌系统才具有这种小而均匀的施水能力,但它们所固有的弱点限制了它们的应用。对滴灌来说,在每一个施水点上、调节流量的出水口很小, One of the main advantages of a controlled, small-scale frequent irrigation method is that surface water can be avoided by controlling the rate of infiltration through the amount of water applied, not through the soil itself, but also in heterogeneous soils Highly uniform infiltration. It is clear that only small drip irrigation and sprinkler systems have this small and uniform water capacity, but their inherent weakness limits their use. For drip irrigation, at each water supply point, the outlet to regulate the flow is small,