機器
agricultural
agriculture
chemical
crop
cultivated
cultivation
dirt
dust
ecology
environment
equipment
farm
farmer
farming
farmland
fertile
fertilizer
fertilizers
field
grain
growth
industry
land
landscape
machinery
mechanization
modern
nature
pesticides
plowed
preparation
rural
scene
season
soil
sprayer
spraying
spreader
spring
to grow
tractor
wheat
work