将灌溉水引入田面以下一定深度,通过土壤毛细管作用,湿润根区土壤,以供作物生长需要。这种灌溉方式亦称渗灌,适用于上层土壤具有良好毛细管特性,而下层土壤透水性弱的地区,但不适用于土壤盐碱化的地区。
人工地下灌溉 artificial sub irrigation
自然地下灌溉 natural subirrigation
地下灌溉廊道 irrigation tunnel
地下灌溉系统 soil irrigation system ; subirrigationsystem
地下灌溉干渠 buried main
无压地下灌溉 non-pressure underground irrigation
地下灌溉管道系统 system of irrigation pipes built under the ground
地下暗管灌溉 irrigation by buried pipes
地下浸润灌溉 subsurface irrigation by groundwater
地下水流灌溉 underflowing irrigation
自动填充容器灌溉系统具有地下灌溉的优点。
AutoFill automatic container irrigation delivers the convenience of automatic irrigation, but with the advantages of sub-irrigation.
有五种方法用于水利灌溉:土地漫灌,垄沟灌溉,喷洒法,地下灌溉和滴灌法。
There are five methods of applying irrigation water to fields-flooding, furrow irrigation, sprinkling, sub-irrigation, and trickle irrigation.
对局部控水灌溉(无压地下灌溉)技术从理论上进行了分析,并给出了其土壤水分运动方程。
Theoretical analysis of local-control irrigation, i. e. , non-pressure underground irrigation, is conducted, and soil water movement equation is presented.
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