Four different treatm "weiyou198"), the crop yie pyrophosphorylase ( AGPase), ents were compared relative to their effects on the protein content in brown rice ( variety ld, and the activity of the four enzymes sucrose synthase (SUS), ADP - glucose nitrate reductase (NR), and glutamine synthase (G S). The fertilizer ratio (N: P2O5: K2O) in the four different treatments were the" Recommended Ratio" ( i. e. , the ratio of N : P2O5 : K2O is 190: 90: 100 kg ha^-1 ), the "High Nitrogen Ratio" ( N: P2O5 : K2O is 210: 90:...