Tabel 1 Effects of nitrogen levels on N and organic carbon (C) content in Panax notoginseng

Nitrogen content (%)

Taproot

0.61 ± 0.02 b

1.37 ± 0.01 a

1.37 ± 0.01 a

Rhizome

0.95 ± 0.07 b

2.01 ± 0.02 a

1.88 ± 0.04 a

Fibrous root

1.30 ± 0.03 b

2.07 ± 0.05 a

2.04 ± 0.02 a

Stem

0.59 ± 0.01 c

1.01 ± 0.01 b

1.09 ± 0.03 a

Leaf

1.52 ± 0.03 b

2.42 ± 0.05 a

2.52 ± 0.01 a

Organic carbon content (%)

Taproot

43.66 ± 0.17 a

42.27 ± 0.90 a

43.99 ± 0.26 a

Rhizome

42.93 ± 0.43 a

41.03 ± 0.55 a

44.65 ± 2.48 a

Fibrous root

40.55 ± 0.35 a

38.66 ± 0.60 a

39.06 ± 1.21 a

Stem

35.18 ± 0.35 a

35.96 ± 0.51 a

36.48 ± 1.48 a

Leaf

41.24 ± 0.37 a

42.38 ± 0.49 a

42.80 ± 0.57 a