棉花是山东省重要经济作物之一，其中地膜棉约占30％～50％。由于覆膜后地温增高，墒情好，可以促进棉苗生长，增加棉花产量，但也有利于杂草的萌发出土，盛发的杂草常常顶破地膜，与棉苗竞争营养和光照，造成棉花减产。地膜棉田除草一直是棉花生产中的难题之一。1997～1998年 Cotton is one of the important economic crops in Shandong Province, of which cotton film accounts for about 30% to 50%. As the film after the ground temperature increases, moisture is good, can promote the growth of cotton seedlings, increase cotton yield, but also conducive to the germination of weeds unearthed, weeds often burst the top of the film, competing with cotton seedlings nutrition and light, resulting in cotton Cut Mulching Cotton weeding has been one of the problems in cotton production. 1997 ~ 1998