在一定厚度的土层下部铺设土工膜或地膜实现地下灌溉的节水灌溉方法。在地表深度的土层下部铺设隔水层，隔水层材料可为地膜、加厚地膜或土工膜。根据需要在隔水层上面铺设贮水层，并且在贮水层上面铺设反滤层。在反滤层上面铺设土层，在土层毛细和土层表面蒸发作用下，实现向植物根系土壤施水。
隔水层防止贮水层中的水渗透到地下，反滤层防止上覆土层的土壤淤堵贮水层。贮水层通过透水墙与供排水沟连通，实现给水并汇集储存雨水。节约灌溉用水，投资省，使用年限长，灌溉和施肥同时进行，减少污染。特别适合于城市绿化草坪、天然草皮运动场、农业蔬菜苗木大棚，也适用于防风固沙、草原植被恢复和荒漠治理。
Water-saving irrigation method in the lower layer of certain thickness laying geomembrane or film to achieve underground irrigation. Laying in the lower soil surface depth of water-resisting strata, water-resisting layer materials for plastic film, thick film or geomembrane. According to the need to lay out a water above the impermeable layer, and the filter layer is laid in the storage layer. The laying of soil above the filter layer, the soil capillary and soil surface evaporation, applied water to the plant root soil.
The water-resisting layer to prevent the infiltration of water storage layer to the underground, filter layer to prevent the overburden soil clogging storage layer. The water through the permeable wall and for drain connected, the water supply and storage of rainwater collection. Irrigation water saving, investment saving, long service life, irrigation and fertilizer at the same time, reduce pollution. Particularly suitable for city greening lawn, the natural turf athletic field, the vegetable seedling in greenhouse, also suitable for windbreak and sand-fixation, grassland vegetation restoration and desertification control.