地膜栽培残留在土壤中的碎膜给农田带来的污染日趋严重．据148团1995年毛月调查，地膜植棉才6年的农三连61—3号地0—30cm深的耕层中，每公顷残膜留量达192kg．1996年4月再次测量每公顷残膜留量达到231kg，比1995年又增了39kg，残股平铺面积为耕地面积的256－2％，等于残膜在土 Membrane culture residue in the soil of the film to the farmland increasingly serious pollution. According to the 148 cliques survey of 1995, in the plow layer of 0-30cm depth of 61-3 plots of Nongsanlian 6-year mulching with cotton film, 192kg of residual film per hectare was retained. Measured again in April 1996, the residual film per hectare reached 231kg, an increase of 39kg over 1995, residual tile area of ​​256-2% of the cultivated area, equal to the residual film in the soil