Response of Bacterial Community Structure in the Bulk Soil and Rice Straw Residues under Different Crop Rotation Systems

Table 4

Shannon diversity index of the bacterial communities colonizing rice straw residues and bulk soil at days 30, 50 and the average of the two-time points.

Treatments	Shannon diversity index
	Day 30	Day 50	Average
RS-SR-AN	1.14 ± 0.03^bcd	1.21 ± 0.06^bc	1.18 ± 0.02^cd
S-SR-AN	1.18 ± 0.06^cd	0.97 ± 0.20^a	1.07 ± 0.09^bc
RS-SR-AE	1.01 ± 0.09^abcd	0.92 ± 0.06^a	0.97 ± 0.03^ab
S-SR-AE	0.85 ± 0.23^a	0.93 ± 0.15^a	0.89 ± 0.08^a
RS-SB-AN	1.23 ± 0.06^cd	1.34 ± 0.06^c	1.28 ± 0.01^d
S-SB-AN	1.12 ± 0.21^bcd	1.10 ± 0.12^ab	1.11 ± 0.09^c
RS-SB-AE	0.96 ± 0.15^abc	1.01 ± 0.04^a	0.98 ± 0.09^ab
S-SB-AE	0.92 ± 0.03^a	0.90 ± 0.00^a	0.91 ± 0.02^a

The value after ± showed the standard deviation (n = 3). Means in a column followed by the same letter are not significantly different. Means marked with different letters (a, b, c, d) are significantly different according to Duncan’s Multiple Range Test ().