丙烯腈改性玉米秸秆
corn stalks modified acrylonitrile
机械化秸秆还田技术
Straw mechanization technology
钾肥配合秸秆还田
potassium K fertilization and straw recycling
秸秆翻压还田
ploughing wheat straw under soil
秸秆根茬切碎还田机
straw stubble returning machinery
秸秆沟埋还田
ditch-burying straw returning
秸秆还田秋施肥
autumn fertilizing combined with returning stalks to field
秸秆机械化还田
straw crushed for reclaiming
秸秆切碎还田机
straw shredding and returning machine
秸秆整株还田
whole maize straw incorporation