Effects of combined fertilization of nitrogenous fertilizer(N),phosphate fertilizer(P),potash fertilizer(K),silicon fertilizer(Si),manganese fertilizer(Mn)and organic fertilizer on migration of nutrients,photosynthesis characteristic,yield and grain protein contents in brown rice were investigated in field-plot experiment.The results show that by means of raising net photosynthesis ratio of functional leaves,effective ears and seeds per ear.Proper application of N-P-K-Si-Mn-organic combined fertilizer can Ⅰ. promote absorption,transportation a...