地膜覆盖栽培技术的普遍推广应用,为广大农民带来了丰收和富裕,这项技术已日益被人们所重视;但是,残留地膜的污染问题也应引起人们的重视。残留地膜的危害很大:(1)不利于作物的生长发育,残留地股会切断土壤的毛细管,使土壤通透性变差,作物得一下到Ii’边的养分,根系发育受阻,最终导致土壤板结;(2)不利播种和中拼除草,残留地膜会堵塞播种机。形成局部 The universal popularization and application of plastic film mulching cultivation technology has brought great harvest and affluence to farmers. This technique has been paid more and more attention by people. However, the pollution of residual mulch film should be paid more attention. Residue film is very harmful: (1) is not conducive to the growth and development of crops, the residual shares will cut off the soil capillary, the soil permeability worse, crops get to Ii ’side of the nutrients, blocked root development, and ultimately lead Soil compaction; (2) adverse seeding and spelling weeds, residual film will plug planter. Form a partial