Tillage Effects on Soil Biochemical Properties and Maize Grown in Latosolic Red Soil of Southern China
Table 2
Effects of tillage practices on soil physical properties in two years.
Depth (cm)
Treatment
Bulk density (g·cm−3)
Porosity (%)
2016
2017
2016
2017
0–10
2RT
1.25 b
1.27 b
53.36 b
52.61 b
2RTSS
1.24 b
1.26 b
53.73 b
52.99 b
SS
1.21 c
1.24 c
54.85 a
53.73 a
ZT
1.28 a
1.31 a
52.24 c
51.12 c
10–20
2RT
1.38 b
1.40 b
48.51 b
47.76 c
2RTSS
1.36 c
1.38 c
49.25 b
48.51 b
SS
1.33 d
1.35 d
50.37 a
49.63 a
ZT
1.48 a
1.51 a
44.78 c
43.66 d
20–30
2RT
1.56 a
1.57 a
41.79 b
41.42 b
2RTSS
1.55 a
1.56 a
42.16 b
41.79 b
SS
1.53 b
1.54 b
42.91 a
42.54 a
ZT
1.56 a
1.58 a
41.79 b
41.04 b
30–40
2RT
1.56 b
1.57 b
41.79 b
41.42 b
2RTSS
1.55 b
1.56 bc
42.16 b
41.79 ab
SS
1.53 c
1.55 c
42.91 a
42.16 a
ZT
1.57 a
1.59 a
41.42 c
40.67 c
Values within a column in the same year followed by the same letters are not significantly different (). 2RT: two passes of rotary tillage; 2RTSS: two passes of rotary tillage + subsoiling; SS: subsoiling; ZT: zero tillage.
