农用地膜广泛应用于中低产田、经济作物、蔬菜等农作物上,对提高产量,改善品质,以及解决作物高寒地区栽培起到了极大作用。特别是为蔬菜“淡季不淡,均衡供应”立下了汗马功劳,给农民带来了巨大的经济效益。 我国自70年代引进地膜覆盖栽培技术以来,地膜生产量迅速上升,1990年达35万吨,1995年达48万吨,预计2000年将达到 Agricultural film is widely used in low-yielding fields, cash crops, vegetables and other crops, to improve yield, improve quality, and to solve the cultivation of crops in alpine region has played a significant role. Especially for vegetables “off-season is not short, a balanced supply” made a contribution, to farmers brought huge economic benefits. Since the introduction of plastic film mulching cultivation technology in China in the 1970s, the production of plastic mulching has rapidly risen to 350,000 tons in 1990 and 480,000 tons in 1995, and is expected to reach 2,000 in 2000