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1前言地膜覆盖栽培自兴起推广以来，对促进农业生产起到了积极的作用。但塑料地膜在大面积的耕地中残留，给子孙后代留下了深深的忧虑。据统计，连续覆盖个一5年的土地，玉米产量下降10％左右，棉花产量下降10％一23％，危害甚大。解决地膜对土地污染的办法：1）人工捡拾。费工
1 Introduction Film mulch cultivation since its inception promoted the promotion of agricultural production has played a positive role. However, plastic film in a large area of cultivated land residues, left deep concern for future generations. According to statistics, the continuous coverage of a five-year land, corn output decreased by about 10%, a 10% -23% decline in cotton production, endangering a great deal. Membrane to solve the problem of land pollution: 1) manual pick up. Fatigue