英文關鍵字
adust
agriculture
agronomy
arable
ash
bedrock
bent
brim
burnt
cornfield
crop
cultivation
dirt
earth
economy
farm
farming
fertile
field
fire
formation
furrow
girder
ground
harvest
husbandry
land
margin
ploughing
plowing
priming
ranch
rural
scorched
season
soil
square
till
tillage
tilth
turn
turning
weed
wheat