3. Results
3.1. Soil properties
Soil C/N ratio, soil moisture and soil temperature were affected
by tillage during the 12 years trial period (Table 3). Compared with
CT, NT increased the values of C/N and soil moisture content before
sowing (SM-BS) and at the V-12 stage (SM-V12) (P < 0.05), RT only
enhanced the content of soil moisture before sowing (SM-BS)
(P < 0.05). However, NT and RT tended to have lower soil
temperature both before sowing (ST-BS) and during a month after
sowing (ST-AS) relative to CT (P < 0.05) (Table 3).