棉作栽培自引进地膜复盖技术后,对提高棉花的品级和产量起了一定的作用,但经地膜复盖后棉田生态因子发生了一系列变化。从而引起杂草群落组成及消长动态也发生了相应的变化。1982—1984年,我场通过大田 Cotton cultivation since the introduction of plastic film covering technology, to improve the quality and yield of cotton played a certain role, but after cotton mulch ecological factors have undergone a series of changes. Which led to weed community composition and dynamics of the decline also occurred in the corresponding changes. 1982-1984, my field through Daejeon