水由称为滴头毛管的供水管路流进滴头,滴头将水注入土壤。滴头是滴灌系统的心脏。水通过滴头,在大气压力下,以一个恒定的低流量滴出或渗出,一般情况下是每小时数公升。水沿毛管管路以较宽的间隔施出,在土壤剖面中以非饱和水流向四周扩 Water flows into the dripper from a water supply pipe called the dripper capillary, and the dripper injects water into the soil. The dripper is the heart of a drip irrigation system. Water drips or exudes at a constant low flow rate through the dripper at atmospheric pressure, typically a few liters per hour. The water is applied at a wide interval along the capillary line and spreads around the soil profile with unsaturated water