地膜“一膜多用”的方式多种多样。时间可长可短,可根据需要灵活运用。 1 地膜平盖 地膜直接覆盖在播种的畦面或栽培作物的表面,四周压严,充分利用地膜下的小气候及温室效应。 1、平盖地膜 在阳畦或温室中育苗时加盖一层地膜,可提高地温1～2℃提早出苗2～3天。 2、平盖叶菜 菠菜、小白菜、韭菜、芹菜等在早春季节盖地膜20～30天,可 Film “a multi-purpose film,” a variety of ways. Time can be long or short, can be flexibly used as needed. 1 film Mulch Mulch directly cover the sown noodles or crops on the surface, around the strict pressure, take full advantage of the sub-microclimate and the greenhouse effect. 1, flat cover plastic film in the sun or greenhouse nursery stamped with a layer of plastic film can increase the ground temperature 1 ~ 2 ℃ early emergence 2 to 3 days. 2, covered with leafy spinach, cabbage, leeks, celery, etc. in the early spring cover film 20 to 30 days,