Using two local high-yielding cultivars,Yangdao 6(indica) and Yangfujing 8(japonica),as materials,four treatments,no N(T1),inorganic N fertilizer(T2),rapeseed cake fertilizer(T3),and rapeseed cake fertilizer combined with inorganic nitrogen fertilizer(T4),were conducted to investigate the effect of applying rapeseed cake fertilizer combined with inorganic nitrogen fertilizer on morphology and physiology of roots and yield of rice.Results showed that the order of grain yield was T4 > T2 >T3 > T1,the differen...