1987年中国农机学会科普活动计划中,有三个重点项目: 一、净洗技术的推广应用宣传普及金属净洗剂的性质、特点、质量要求、类别、操作方法、经济效果,及其有关机具的正确使用。二、机械铺膜技术的推广应用以棉花、花生、玉米、蔬菜为重点,宣传普及机械铺膜技术的作用,有关机具的种类、结构、性能、使用知识,以及推广机械铺膜获高产的经验。三、交流技术培训的经验 1987 China Agricultural Machinery Society activities plan, there are three key projects: First, the promotion and application of net cleaning technology to promote the publicity of the nature, characteristics, quality requirements, categories, methods of operation, economic effects, and its related tools use correctly. Second, the promotion of mechanical film technology applications Cotton, peanuts, corn, vegetables as the focus, publicize the role of mechanical film technology, the type of machine, structure, performance, use of knowledge, and the promotion of mechanical film production of high yield experience . Third, the exchange of technical training experience