8Cohen M. Yield and hysiological responses of walnut trees in semiarid conditions: application to irrigation scheduling[C]. Ⅱ International Symposium on Irrigation of Horticultural Crops: Chnia Gret Greece, 1997:273-279.
9Lampinen B, Buchner R, Fulton A, Grant J, et al. Irrigation management in walnut using evapotranspiration, soil and plant based data[EB/OL].Http://walnutreseareh.ucdavis.edu/2004/2004_ 113.pdf.