1Nangia V, Turral H, Molden D. Increasing water productivity with improved N fertilizer management[J]. Irrigation and Drainage Systems, 2008,22(3/4) :193-207.
2Kiggundu N, Migliaccio K W, Schaffer B, et al. Water savings, nutrient leaching, and fruit yield in a young avocado orchard as affected by irrigation and nutrient management[J]. Irrigation Science, 2012,30(4): 275 -286.
3Mohammad M J. Utilization of applied fertilizer nitrogen and irrigation water by drip-fertigated squash as determined by nuclear and tradi- tional techniques[J]. Nutrient Cycling in Agroecosystems, 2004,68 (1) : 1 - 11.
4Qinghua Kong, Guangyong Li,Yonghong Wang, et al. Bell pepper response to surface and subsurface drip irrigation under different ferti- gation levels[J]. Irrigation Science, 2012,30(3):233-245.
5Xing G X, Zhu Z L. An assessment of N loss from agricultural fields to the environment in China[J]. Nutrient Cycling in Agroecosys- terns, 2000,57(1) :67 -73.
6Sigunga D O, Janssen B H, Oenema O. Ammonia volatilization from Vertisols[J]. European Journal of Soil Science, 2002,53 (2) :195 - 202.
