Jiang L G, Dai T B, Jiang D, Cao W X,Gan X Q,Wei S Q. Characterizing physiological N-use efficiency as influenced by nitrogen management in the rice cultivars [J]. Field Crops Research, 2004,88(2):239-250
[2]
Evans R J. Nitrogen and photosynthesis in the flag leaf of wheat (Triticum aestivum)[J].Plant Physiology.1983,72(2): 297 -302
Cui Z L, Chen X P, Miao Y X, Li F, Zhang F S, Li J L, Ye Y L, Yang Z P, Zhang Q, Liu C S. On 2 farm evaluat ion of winter wheat yield response to residual soil nitrate 2 N in North China plain[J]. Agronomy Journal, 2008, 100:1527-1533
Zhao R F, Chen X P, Zhang F L, Zhang H S, Schroder J, Romheld V. Fertilizat ion and nitrogen balance in wheat -maize rotat ion system in North China[J]. Agronomy Journal, 2006, 98: 938-945
[27]
Ju X T, Kou C L, Zhang F S, Christie P. Nitrogen balance and groundwat er nitrate contaminat ion: Comparison among three intensive crop-ping systems on the North China Plain. Environment Pollution, 2006, 143(1): 117-125