地膜覆盖栽培具有增温、保水、保肥,改善土壤理化性质,提高土壤肥力,抑制杂草生长,减轻病害的作用,在连续降雨降雪的情况下还有降低湿度的功能,从而促进植株生长发育,提早开花结果,增加产量,减少劳动力成本等。蔬菜地膜覆盖增产增收效果好,已被大多数菜农认同,但在生产过程中要避免以下4种不正确的做法,以免事倍功半,影响产值。一、不能选用工业用膜膜大 Plastic film mulching has the functions of increasing temperature, keeping water and keeping fertilizer, improving soil physical and chemical properties, improving soil fertility, inhibiting weed growth and reducing diseases. In the case of continuous rainfall and snowfall, there is a function of reducing humidity so as to promote plant growth and development , Early flowering results, increase production, reduce labor costs and so on. Vegetable mulching improve yield and income, and has been recognized by most vegetable farmers, but in the production process to avoid the following four kinds of incorrect practices, in order to avoid duplication of effort, affecting the output value. First, you can not use large industrial membrane