31       crop_code
ON      crop_name_1
Onion     crop_name_2
10000   total_biomass_C
0.5     portion_of_grain
0.4     portion_of_shoot
0.1     portion_of_root
35.4    plant_CN_ratio
28.6    grain_CN_ratio
40      root_CN_ratio
50      shoot_CN_ratio
368     water_requirement
5       max_LAI
2       max_height
2550    max_TDD
1       N_fix
0.40	  initial efficiency of use of absorbed light (kg CO2/ha/h)/(J/m2/s)
35      maximum rate of leaf photosytensis, kg CO2/ha/h
0.04   rate of crop development in vegetative stage (1/d, 0.032) 
0.021   rate constant of crop development in reproductive phase 1/d (0.021)
0.8     economic copmponent/storage organc by weight
325.0   specific leaf weight constant, kg dm/ha
625.0   specific stem weight, kg dm/ha
0.65     ratio of internal/external CO2 concentrations, 0.65-0.9
1.5     maximum root depth for crop, m
0.03    increase rate of root depth, m/day

