果树渗灌节水新技术山东省林科所等单位，根据目前农村经济状况，设计出一种简单易行、投资少、且经久耐用、不破坏土壤结构、能防止根部病害互相传染等灌、排两用的新节水型果树渗灌法。渗灌法的管子是用陶土烧制成的。管的内径２０厘米，每节长３５厘米，管壁厚３——５... Fruit trees seepage irrigation and water saving technologies Shandong Forestry Bureau and other units, according to the current rural economy, to design a simple, low investment, and durable, does not destroy the soil structure, can prevent root disease mutual infection, irrigation, Row of dual-use new water-saving fruit tree infiltration method. Seepage irrigation pipe is made of clay burned. Tube diameter 20 cm, each section length 35 cm, wall thickness 3--5 ...