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地膜覆盖,是塑料薄膜地面覆盖栽培技术的简称。这项新技术在国外是五十年代后期开始发展起来的,而国内则是近二、三年才开始进行研究试验。但由于该项新技术具有不少,尤点,因此发展很快。到1980年为止,全国已有22个省117个市县进行了地膜覆盖栽培试验,总面积已达2万6千余亩。地膜覆盖栽培技术是用透明的聚氯乙烯薄膜来进行地面覆盖的。这种薄膜厚度仅为0.015—0.02毫米。复盖方法有两种:一种是先定植作物,然后把薄膜剪成与行距宽度相同的长条,覆盖行间;也可将整张薄膜按
Plastic film covering, plastic film is the ground covering cultivation technology for short. This new technology was developed abroad in the late 1950s, while in China it took nearly two or three years to begin research trials. However, due to the new technology has many, especially the point, so the rapid development. By 1980, 117 cities and counties in 22 provinces had carried out mulching cultivation experiments with a total area of over 26,000 mu. Plastic film mulching technology is the use of transparent polyvinyl chloride film to cover the ground. This film thickness is only 0.015-0.02 mm. There are two ways to cover: one is to plant the crop first and then cut the film into strips of the same width as the row spacing, covering the rows; the entire film can be pressed