英文關鍵字
agricultural
agriculture
anticrop
cereal
chemical
country
countryside
crop
cultivated
environment
environmental
equipment
farm
fertilize
fertilizer
field
food
green
herbicide
industry
insecticide
land
landscape
liquid
machine
machinery
nature
parasite
pest
pesticide
plant
protect
rural
scenic
season
special
spray
sprayer
spring
summer
technology
toxic
tractor
treatment
weed
weedkiller
wheat
work
working