30        crop_code
DWR        crop_name_1
DW_rice  crop_name_2
7367      total_biomass_C
0.35      portion_of_grain
0.43      portion_of_shoot
0.22      portion_of_root
42        plant_CN_ratio
29        grain_CN
72        root_CN_ratio
7.68        shoot_CN_ratio
710       water_requirement
6         max_LAI
0.5       max_height
2250      TDD_10
1         N_fix
0.40	  initial efficiency of use of absorbed light (kg CO2/ha/h)/(J/m2/s)
47      maximum rate of leaf photosytensis, kg CO2/ha/h
0.012   rate of crop development in vegetative stage  1/d, 0.012
0.006   rate constant of crop development in reproductive phase 1/d, 0.028
0.8     economic copmponent/storage organc by weight
440.0   specific leaf weight constant, kg dm/ha
1000.0  specific stem weight, kg dm/ha
0.65     ratio of internal/external CO2 concentrations, 0.55-0.76
0.3     maximum root depth for crop, m
0.01    increase rate of root depth, m/day

