Returning straw to soil

wheat straw returning soil

Wheat straw to soil

Returning of wheat straw to field

Returning straw to field

returning straw to field directly

returning straw to land

returning wheat straw into field

straw returning to field

straw returning to the soil

stubble returning to soil

Total wheat straw returning

Crop straw returning

cropland returning to forest

cutting-and-returning-to-field

ditch-burying straw returning

Farmland returning to forestland or grassland

farmland returning to pasture

Farmlands returning to forests and grassland