Soil water movement under drip irrigation of proscenia in Loess
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DOI:10.7606/j.issn.1000-7601.2008.04.03
Key Words: drip irrigation  water movement  mountain afforestation
Author NameAffiliation
WANG Zhijun Gansu Research Institute for Water ConservancyLanzhouGansu 730000China 
LUO Tianfeng Gansu Research Institute for Water ConservancyLanzhouGansu 730000China 
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Abstract:
      Drip irrigation used to mountain afforestation has been rarely studied before.Water movement under five dropping speeds in the loess was investigated in the field experiment by measuring vertical and horizontal movement of water in soil and surface water movement.The results showed that the log law can express surface and horizontal movement of water power function can express vertical movement of water and tree root is an important factor to impact vertical movement of water.The wetting front simulated an ellipsoid in irrigation process but it is changed hemisphere after irrigation.