The experimental fertilization regi

The experimental fertilization regime was consistent with local farming practices, i.e., the N fertilizers were either surface-applied (basal fertilization) at rice transplanting
or provided by top dressings (first and second top dressing) at early- and late-tillering. N0, N150 and N250 denote nitrogen application rates of 0, 150 and 250 kg N ha−1,
respectively