据中国价格信息中心监测,近段时间以来,我国农用棚膜、地膜市场价格比1999年底上升4％左右。折径1米的棚膜平均每吨8 690元,比去年9月上涨3.2％;折径3.5～5米的棚膜9 230元/t,上涨4.4％; According to monitoring by the China Price Information Center, the prices of agricultural film and plastic film in China have risen by about 4% since the end of 1999. The shed film with a diameter of 1 meter averaged 8 690 yuan per ton, which was 3.2% higher than that in September last year. The shed film with a diameter of 3.5 to 5 meters was 9 230 yuan/t, up 4.4%;