除草地膜,顾名思义,这种地膜除了具备普通地膜的保温、保墒,促进作物增产、早熟的作用外,还具有除草功能。这类膜以聚乙烯树脂为原料,以不同形式的助剂将化学除草剂共挤或涂于地膜中,地膜中除草剂被地表层土壤中的水溶出落回地表,在地表土层形成含除草剂的薄土层,称为处理层,这层处理层中的除草剂被杂草的芽輎、茎叶、根等吸收,通过传导作用进入杂草体内,使植物细胞发生生理变化或形态变化,最后达到抑制生长、导致死亡的目的。 Weeding film, as the name suggests, this film in addition to ordinary film insulation, moisture, promote crop yield, precocious role, but also has a weeding function. This kind of film takes polyethylene resin as raw material, co-extrudes or applies chemical herbicides to the film with different forms of auxiliary agents, and the herbicide in the film is dissolved by the water in the surface soil to be eroded back to the earth’s surface, The thin layer of herbicide, called the treatment layer, the layer of herbicides in the treatment layer of weed buds, stems and leaves, roots and other absorption through the conduction into the weed body, so that physiological changes in plant cells or morphology Change, and finally achieve the purpose of inhibiting growth and leading to death.