Effect of improving soil
Improving soil by warping
Improving soil condition
improving soil fertility
moving soil and improving soil fertility
bare soil and soil with crop
composite soil nailing soil nailing and micro-pile
Coupled transport of soil water and soil heat
movement of soil water and soil salt
Paddy soil derived from red soil
Paddy soil from red soil
Paddy soil in red soil region
Reducing soil salinity and ameliorating soil