夏大豆田的主要杂草:禾本科类为稗、马唐、画眉草、牛筋草;阔业类为铁苋菜、苘麻、野苋菜、粟米草、马齿苋、旱连草、鸭跖草和莎草科的碎米莎等。这些杂草一般在田间都是混合发生,具有高密度、生长快的特点,与大豆苗争光、争空间。若防治不及时,或用药技术不当,均能造成草害,使大豆减产。现将化学除草技 The main weeds in the summer soybean fields: grass class is barnyardgrass, crabgrass, thrush, tendon grass; broad category of iron amaranth, Abutilon, Amaranthus, corn grass, purslane, drought even grass, Commelina And Cyperaceae broken Misha and so on. These weeds are generally mixed in the field, with the characteristics of high density and fast growth, competing with soybean seedlings for space. If the prevention and treatment is not timely, or improper medication technology, can cause grass damage, so that soybean production. Chemical weeding technology now