Influence of annual application of organic matters on the soil fertility in paddy field, 4: Effect of annual application of rice straw and manure on the physical properties of surface and subsurface soil in non-tillage paddy field

agricultural chemicals animal litter anthropogenic soil types cereal products chemicophysical properties cultivation environment farmyard manure feeds fertilizers foods growing media methods paddy soils products rooting media roughage site factors soil soil amendments soil fertility soil physicochemical properties soil types solid wastes straw subsoil tillage top soil vegetable products wastes