Item

Growth period

Starting and

ending date

Cumulative time/d

Net growth/cm

Proportion of the

total amount

Plant height

Pre-growth stage

04-07 - 05-07

30

13.25

10.83

Fast-growing stage

05-08 - 07-06

60

74.65

61.00

Late-growth stage

07-07 - 07-21

15

34.47

28.17

Stem diameter

Pre-growth stage

04-07 - 05-07

30

0.18

17.48

Fast-growing stage

05-08 - 07-06

60

0.63

61.17

Late--growth stage

07-07 - 07-21

15

0.22

21.36