2       crop_code
WW      crop_name_1
Winter_wheat crop_name_2
3390.7    total_biomass_C
0.4    portion_of_grain
0.4    portion_of_shoot
0.2     portion_of_root
31.2    plant_CN_ratio
18    grain_CN
48      root_CN_ratio
71      shoot_CN_ratio
513     water_requirement
3       max_LAI
0.5     max_height
2000    TDD_10
1       N_fix
0.4	  initial efficiency of use of absorbed light (kg CO2/ha/h)/(J/m2/s), 0.5
40      maximum rate of leaf photosytensis, kg CO2/ha/h, 40
0.03	rate of crop development in vegetative stage (1/d, 0.040) 
0.0265	rate constant of crop development in reproductive phase 1/d (0.0265)
0.85    economic copmponent/storage organs by weight
425.0   specific leaf weight constant, kg dm/ha
1080.0  specific stem weight, kg dm/ha
0.75    ratio of internal/external CO2 concentrations, 0.5-0.77
1.3     maximum root depth for crop, m
0.018    increase rate of root depth, m/day


