Table 3 Cumulative degradation rate of straw returned to the field in each period under different return quantities.

From: Regulation of straw decomposition and its effect on soil function by the amount of returned straw in a cool zone rice crop system

Sample

Cumulative degradation rate

Fitted the degradation equation

20 d

40 d

71 d

104 d

137 d

T1

28.13 ± 3.27a

37.13 ± 1.21a

39.01 ± 4.74a

46.54 ± 0.75a

49.32 ± 6.67a

y = ln(x − 4.67)

T2

29.45 ± 2.62a

36.52 ± 1.38a

42.58 ± 4.72a

48.88 ± 2.04a

54.37 ± 0.38a

y = ln(x − 7.23)

T3

20.78 ± 4.82a

29.21 ± 1.86b

35.67 ± 4.93a

40.00 ± 1.36b

42.90 ± 0.07a

y = ln(x − 7.59)

  1. Lowercase letters indicate significant differences between treatments in the same period (p < 0.05).
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