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大棚蔬菜栽培一直采用沟灌法。如以每次每亩灌水15吨。一生长季节亩需水300吨左右,其耗水量惊人。南京市蔬菜研究所经试验证明,在塑料大棚中使用小高畦地膜覆盖,下装塑料软管灌水配套系统,可有效地节约水源。具体做法是:在宽度为3—5厘米的单壁塑料管或双壁管上隔一定距离打一微孔,使该塑料软管与按有过滤器的水源相接。在高畦表面作物根系附近纵向排列1—2道灌水管,盖上地膜,压严盖实。
Greenhouse vegetable cultivation has been using furrow irrigation method. Such as 15 acres per acre irrigation. A growing season of about 300 tons of water demand, its water consumption is staggering. Nanjing Vegetable Research Institute has proved that the use of small high plastic film mulching in plastic sheds, bottled plastic hose irrigation supporting system, which can effectively save water. The specific approach is: the width of 3-5 cm single-walled plastic pipe or double-wall pipe at a distance to make a micro-hole, so that the plastic hose and filter by the water phase. Arranged in the vertical crop near the root surface of crops in the longitudinal 1-2 irrigation pipes, covered with plastic film, cover tightly.