地膜覆盖栽培技术在我国大面积推广应用以来,取得了巨大的经济效益和社会效益。但是随着地膜的大量使用,使越来越多的残膜滞留在土壤中,1991～1993年测定连续使用三年的玉米田地表残膜平均公顷留量44.55千克,耕层0～30厘米残膜公顷留量高达76.95千克,严重地影响了农作物的生长发育及农村人民的生活环境,使原来显著增产的“白色革命”变成了“白色污染”。解决残膜污染已成为地膜覆盖栽培技术向健康发展的迫切要求。解决残膜污染的途径很多,如填埋、焚烧及再生利用等,这些方法都有各自的弊端,填埋不容易腐烂;焚烧会释放出有毒气体;回收再利用费用较高难度大。因此开展应用降解地膜是解决残膜污染的重要途径之一。 Mulch mulching cultivation technology in our country a large area of ​​popularization and application, has made tremendous economic and social benefits. However, with the extensive use of mulch film, more and more residual film was retained in the soil. From 1991 to 1993, the average hectare of residual film on the surface of maize field for three years of continuous use was 44.55 kg and 0-30 cm The membrane hectare reserves of up to 76.95 kg, a serious impact on crop growth and development of rural people’s living environment, so that the original significant increase in the output of the “White Revolution” into a “white pollution.” To solve the residual membrane pollution has become a film mulching cultivation technology to the healthy development of the urgent requirements. There are many ways to solve the problem of residual membrane pollution, such as landfill, incineration and recycling, which have their own drawbacks. Landfill is not perishable. Incineration can release toxic gas. Recycling costs are high and difficult. Therefore, the application of degradable plastic film is one of the important ways to solve the residual film contamination.