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地膜覆盖栽培技术,自1979年开始示范推广以来,取得了明显的经济效果。目前已在40多种作物,2000万亩农田上推广应用。但是,随着地膜覆盖栽培面积的逐步扩大,耕地中残膜量也逐年增多,严重影响了土壤中水分疏导及作物对养分的吸收,造成农田环境污染和土壤生产力的下降。光解膜是为了解决残膜污染而制造的一种新的聚乙烯薄膜。其作用和施用方法与一般聚乙烯薄膜相同,但这种薄膜在太阳光的作用下,经过一段时间可自动开裂、破碎,最终分解变成水、二氧化碳、脂肪胫等物质,从而减少了对农田的污染,并且,这种光解膜不用人工回收,节省人力,提高经济效益。
Film mulching cultivation technology, since 1979, since the demonstration and promotion, and achieved significant economic results. At present, it has been popularized and applied on more than 40 kinds of crops and 20 million mu of farmland. However, with the gradual expansion of the mulching area, the amount of residual film in cultivated land also increased year by year, seriously affecting soil water diversion and crop nutrient uptake, resulting in farmland environmental pollution and soil productivity decline. Photolysis film is to solve the residual film pollution and create a new polyethylene film. Its role and application methods and general polyethylene film the same, but this film under the action of sunlight, after a period of time can automatically crack, crumble, and eventually decomposed into water, carbon dioxide, fat tibia and other substances, thereby reducing the farmland Of the pollution, and, this photolytic membrane without artificial recovery, save manpower, improve economic efficiency.