英文關鍵字
agricultural
agriculture
arable
autumn
chemical
crop
cultivate
cultivated
cultivation
dust
earth
editorial
equipment
farm
farmer
farming
farmland
fertile
fertilization
fertilize
fertilizer
field
forest
green
ground
harrow
heavy
industry
land
machine
machinery
nature
plant
prepare
red
season
seed
soil
sow
sowing
spread
spring
summer
tractor
treatment
tree
vehicle
work
worker