我国是一个水资源缺乏的国家,人均迳流量只有世界人均值的1/4强,因此迫切需要节约用水。渠道防渗是节约用水的重要措施之一,由于渠道衬砌工程量很大,需要投资很多,所以研究渠道防渗新材料,以降低投资是当前农田水利的重要研究课题。塑料薄膜是一种广泛应用的新材料,研究应用于渠道防渗在我国始于60年代初期,其中包括我们在北京市东北旺农场南干渠上的生产性 Our country is a country lacking in water resources, and the average flow per capita is only one quarter of the world average, so it is urgent to save water. Seepage prevention of canal is one of the important measures to save water. Due to the large volume of channel lining and the large investment required, it is an important research topic to study new ways to prevent seepage of new materials in order to reduce investment. Plastic film is a widely used new material, research applied to seepage prevention in our country began in the early 60s, including our production line in the south of Dongbeiwang farm in Beijing