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Table 8 The nitrogen (N) fertilizer rates and planting density in different treatments

From: Evaluation of grain yield based on digital images of rice canopy

Treatments N fertilizer rates (kg ha−1) Planting densities (million plants ha−1) Plant spacing (× 10−2 m) Line spacing (× 10−2 m)
N0D1 0 0.21 20 23.8
N0D2 0 0.27 20 18.5
N0D3 0 0.33 20 15.2
N0D4 0 0.39 20 12.8
N1D1 135 0.21 20 23.8
N1D2 135 0.27 20 18.5
N1D3 135 0.33 20 15.2
N1D4 135 0.39 20 12.8
N2D1 180 0.21 20 23.8
N2D2 180 0.27 20 18.5
N2D3 180 0.33 20 15.2
N2D4 180 0.39 20 12.8
N3D1 225 0.21 20 23.8
N3D2 225 0.27 20 18.5
N3D3 225 0.33 20 15.2
N3D4 225 0.39 20 12.8
  1. N represents nitrogen; and D represents planting density