一项新的罐渗技术──砖罐罐渗技术

砖罐罐渗技术的优点在于：材料易取，成本低廉，制作工艺简单，节水节肥效益显著。罐渗果园可不择地貌－土壤条件，利用零星水源，分散经营，管理方便，适合在我国中西部山区推广应用。

A BRICK PITCHER IRRIGATION TECHNIQUE

Pitcher irrigation is a water saving irrgation technique that water slowly delivers from apitcher, installed under the ground near a tree,to water the tree. Tree roots are distributed aroundthe pitcher.Pottery pitchers, used for several centuries in Bakistan and Tunisia etc.,are easy tobreak and not convenient for transportation.Brick pitcher irrigation system has been used in apomegranate orchad at the Ytlanmou Dry-Hot Valley Soil Conservation and Ecology Station,un-der Institute of Mountain Hazards and Environment,Chinese Academy of Sciences&Ministry ofWater Conservancy.The brick pitcher irrigation has following advantages: 1.Brick is cheap and convenient for transportation.A brick pitcher with a volume of 27.6Lis made frtom 29 commercial bricks. 2. Pitcher irrigation is very water saving,Water delivery rates of a pitcher can be controlledbetween 1-5L/d. The brick pitchers, installed in the pomegranate orchad at the station,werefilled up with water once a half month during dry scasons,and the pomegranate trees grew well.By comparison of normal irrigation methods, it saved 80%of irrigation water .3.Brick pitchers ean be used for fertilizing. Pertilizers(chemicals,manures and organicmaterials etc.),putting into a pitcher,delivers from the potcher with the water to supply a tree,sothat the effiency of fertilizers is higher that normal metheds.