渗灌是利用修筑或埋设在地下的管道(如塑料管、混凝土管道等),将灌溉水引入田间耕作层,借土壤毛细管作用,自下而上缓慢地浸润根系活动层,供作物吸收利用。对于干旱缺水地区,这是一种省水、增产、小水大用的好办法。由于渗灌是靠毛细管扩散 Infiltration irrigation is the use of built or buried pipelines (such as plastic pipes, concrete pipes, etc.), the introduction of irrigation water into the field tillage layer, the soil capillary action, bottom-up slowly infiltrating the root activity layer for crop absorption and utilization. For drought and water shortage areas, this is a good way to save water, increase production and use less water. Due to seepage irrigation is by capillary diffusion