Recent overseas research progress of anti-aging film s, antifogging films, photo-selective greenhouse films, and diversiform mulch fi lms, as well as covering material recycling were introduced.

• 分别就国外近年在耐老化棚膜、流滴棚膜、光选择性棚膜、各类地膜以及覆盖材料的回收方面所做的工作进行介绍。