Fig 1.
Soil sampling site.
Fig 2.
Five point sampling diagram.
Table 1.
Basic soil physical properties.
Fig 3.
Creep test bench.
Fig 4.
Creep properties curve of paddy soil under different moisture content.
(a) No tillage; (b) Plough tillage.
Fig 5.
σ is the stress on the Burgers model, σ = σ1 = σ2 = σ3.
Table 2.
Fitting parameters of creep model for no tillage paddy soil.
Table 3.
Paddy soil variance analysis.
Fig 6.
Variation of rheological mechanical parameters under different moisture contents.
(a) Instant elastic modulus of no tillage field, (b) Viscosity coefficient of no tillage field, (c) Delay elastic modulus of no tillage field, (d) Delay time of no tillage field, (e) Delay viscosity coefficient of no tillage field, (f) Instant elastic modulus of plough field, (g) Viscosity coefficient of plough field, (h) Delay elastic modulus of plough field, (i) Delay time of plough field, (j) Delay viscosity coefficient of plough field.
Table 4.
Optimal fitting model of relationship between rheological mechanical parameters and moisture content of paddy soil.
Table 5.
Correlation of paddy soil creep parameters.
Fig 7.
Strain proportion under each moisture content.
(a) No tillage; (b) Plough tillage.
Fig 8.
Deformation rate curve under different moisture content.
(a) No tillage; (b) Plough tillage.
Fig 9.
The creep rate of each treatment in the initial and steady-state stages.
(a) No tillage; (b) Plough tillage.