The relationship between the wetted body and the discharge of emitter,the volume of water,and the depth of the emitter is the base of bubbled root irrigation design.The influences of different discharge,volume of irrigation water and the depth on the wetted body of clay loam are gotten though some experiments on lab in this paper.The results shows that the remarkable power functions exist between horizontal and vertical wetting fronts and the infiltration time,and the correlation coefficient are above 0.98....
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