We know how to conserve soil or prevent soil erosion by the methods like 
Crop cover 
building embankments
 terrace farming
 afforestation
ETC
But when it comes to prevent soil erosion by 3rs concept.I can't find any of the ways because I think 3rs  is used to recycle something like papers,jars etc..
My DOUBT is how can we prevent soil erosion by 3Rs method.
Kindly clarify my doubt
