3Olalla F M, Padilla A D, Lopez R. Production and quality of the onion crop(Allium cepa L. ) cultivated under controlled deficit irrigation conditions in a semi-arid climate[J]. Agriculture Water Management, 2004, (68) :77 - 89.
4Kumar S, Imtiyaz M, Kumar A, et al. Response of onion (Allium cepa L. ) to different levels of irrigation water[J]. Agriculture Water Management, 2007, (89) : 161 - 166.
5Kadayifci A, Tuylu G, Ucar Y, et al. Crop water use of onion (Allium cepa L. ) in Turkey[J]. Agricultural Water Management, 2005, (72) :59 - 68.
6Kumar S, Imtiyaz M, Kumar A. Effect of different soil moisture and nutrient regimes on postharvest attributes of onion(Allium cepa L. ) [J]. Scientia Horticulturae, 2007, (112) : 121 - 129.
7Pelter G Q, Mittetstadt R, Leib B G, et al. Effects of water stress at specific growth stages on onion bulb yield and quality[J]. Agricultural Water Management, 2004)(68) :107 ~ 115.
8Allen R G, Pereira L S, Raes D, et al. Crop Evapotranspiration. Guidelines for Computing Crop Water Requirements[J]. FAO Irrigation and Drainage, 1998,(56):117-130.
