一、试验目的高压聚乙烯塑料地膜(简称高压膜,下同)已在农业生产上广泛应用,取得了显著增产增收效果。但膜的成本较高,依作物不同,覆盖率不同,每亩薄膜成本大约25～40元,影响进一步应用和推广:社员群众迫切要求降低成本,节省开支、增加收入,这是发展地膜覆盖栽培中一个急待解决的问题。 First, the purpose of the test High-pressure polyethylene plastic film (referred to as the high-pressure film, the same below) has been widely used in agricultural production, and achieved remarkable yield increase results. However, the higher the cost of the membrane, depending on the crop, the coverage rate is different, the cost per mu of film about 25 to 40 yuan, affecting the further application and promotion: members of the public urgently required to reduce costs, save money and increase revenue, which is the development of plastic film mulching An urgent problem to be solved.