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The Negatively Pressurized Irrigation (NPI) method in which no pressurization is necessary and the elevation of the emitters is higher than that of the water source runs at a negative hydraulic head, driving by the soil matrix suction. A series of laboratory experiments were arranged to study the effects of the two factors (emitter and soil types) on the NPI with emitters 0.5 m above the water source. Fibrous Emitters and Ceramic Emitters of Porous Tubing were used in the experiments to investigate the water movements in clay loamy soil and sandy loam. The experimental data showed that the relationships between time and cumulative infiltration, the maximum horizontal and vertical wetted distances were power functions. The values of the clay loamy soil were bigger than those of sandy loam. The wetting fronts were almost ellipsoid-shaped. The ratio of the maximum horizontal wetted distance to that of the vertical in the clay loamy soil was bigger than that in sandy loam. The efficiency of NPI system with fibrous emitters was higher than that with ceramic emitters under the same soil. The results further verify the feasibility of negatively pressurized irrigation method and are beneficial to the layout of irrigation system.