玉米是吉林省的主要粮食作物．种植面积占作物总种植面积的50％以上。在玉米田中．杂草对玉米产量有较大的影响。这些杂草多为越年生杂草、多年生杂草和早春性一年生杂草．如打碗花、田族花、苣荬菜、藜、蓼、草等。玉米苗期杂草危害可使植株矮小、秆细叶黄．导致中后期生长不? Corn is the main food crop in Jilin Province. Planting area accounts for more than 50% of the total crop area. In the corn field. Weeds have a greater impact on corn production. Many of these weeds are perennial weeds, perennial weeds and early spring annual weeds. Such as playing a bowl of flowers, ethnic flowers, endangered vegetables, quinoa, Polygonum, grass and so on. Maize seedling damage weeds can plant dwarf, thin leaf yellow stem. Lead to growth in the late?