上海郊区应用农膜已有近二十年历史,现在农膜已成为发展粮、棉、油、莱生产不可缺少的重要物资。为了探索节约农膜增产的新途径,我处和石化总厂塑料厂在连续两年试验的基础上,今年将试验面积由去年的8亩扩大到2万亩。试验结果表明,0.05毫米农膜的育苗效果与0.1毫米农膜基本一样,且具有省料、省工、使用方便等优点,值得大力推广。现将0.05毫米和0.1毫米农膜的保温性能、育苗效果比较如下: The application of plastic sheeting in the suburbs of Shanghai has been going on for nearly two decades. Now, plastic sheeting has become an indispensable and important material for the development of grain, cotton, oil and leather products. In order to explore a new way to save production of plastic sheeting, I Division and the plastics plant in Petrochemical Plant on the basis of two consecutive years of tests, this year will test area expanded from last year’s 8 acres to 20,000 acres. The test results show that the 0.05mm plastic film seedling cultivation effect is basically the same as that of 0.1mm plastic film, which has the advantages of saving materials, saving labor and being easy to use. It is worth to be popularized. Now 0.05 mm and 0.1 mm plastic sheeting insulation properties, nursery results are as follows: