目前在生产上地膜大多只覆盖生产一茬蔬菜,以致生产成本很高,人工上也有些浪费。如果同一块地膜能在一年中利用多次,或覆盖一次生产多茬蔬菜,就可以大大降低蔬菜生产的成本,缓解地膜供应的不足,并获得更高的收益。下面介绍几种提高地膜利用率的途径: 1.多次覆盖(1)首先用于温室育苗。在播种后将地膜平铺在播种床床面上,苗出齐后再用于覆盖越冬菠菜或春菠菜、小白菜上,待这些蔬菜返青或长出两片真叶后撤掉地膜,再用于果菜的地面覆盖。(2)先覆 At present, most of the production of plastic film covers only the production of a crop of vegetables, resulting in high production costs and labor costs. If the same film can be used multiple times a year, or cover more than one crop of vegetables, can greatly reduce the cost of vegetable production, film supply to alleviate the shortage, and obtain higher profits. Here are some ways to improve the utilization of the film: 1. Multiple coverage (1) first used in greenhouse nursery. After sowing the mulching film in the seeding bed surface, Miao Qi Qi and then used to cover the wintering spinach or spring spinach, cabbage, until these vegetables turn green or grow two true leaves after the removal of the film, and then Ground in fruit and vegetables. (2) First cover