T, tillage management; S, straw
management; Y, year. F -values and significance level with factors
of straw management (df = 1), tillage management (df = 2)
and year (df = 7). *p < 0.05,
**p < 0.01, ***p < 0.001.
Table
3 The changes in the mean of soil organic carbon stock between 2008 and
2016.