杂草是农作物的一大敌人,它直接与农作物争肥、争水、争光照,严重影响农作物的产量和品质。试验证明,危害农作物严重的杂草有:一年生单子叶杂草如马唐、狗尾草、稗子草等;一年生双子叶杂草如小藜、苞耳、蒺藜、铁苋菜等;多年生杂草如小 Weeds are a major enemy of crops, which compete directly with crops for water, fight for water and compete for light, seriously affecting the yield and quality of crops. Tests show that serious damage to crops weeds are: annual monocotyledonous weeds such as crabgrass, Setaria, triticale; annual dicotyledon weeds such as quinoa, bract ears, Tribulus terrestris, iron amaranth, etc .; perennial weeds such as small