8Hutmacher R B,Phene C J,Mead R M. Subsurface drip and furrow irrigation comparison with alfalfa in the Imperial Valley[A].Modesto,CA,.
9Godoy A C,Pérez G A,Torres E C A. Water use,forage production and water relations in alfalfa with subsurface drip irrigation[J].{H}AGROCIENCIA,2003,(02):107-115.
10Alam M,Trooien T P,Dumler T J. Using subsurface drip irrigation for alfalfa[J].J Am Water Resour Assoc,2002,(06):1715-1721.