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多效农膜是在普通农膜的基础上,改进工艺和配方,使之功效多样化的一种新型农膜。杭州塑料厂研制的多效农膜.机械强度和保温能力提高,新增了防雾滴性和光谱选择性。但这种农膜常用于蔬菜大棚覆盖,用于水稻生产的尚不多见。为此,我们于1991～1992年对多效农膜在连作早稻水、旱育秧中的表现,做了初步的观察。
Multi-effect plastic sheeting is a new type of plastic sheeting that is based on common plastic sheeting and improves the process and formula to diversify its functions. Hangzhou Plastic Factory developed a multi-effect plastic sheeting.Improve the mechanical strength and thermal insulation capacity, adding anti-mist droplet and spectral selectivity. However, this kind of plastic sheeting is often used in greenhouses to cover the rice production is still rare. To this end, we conducted a preliminary observation of the performance of multi-effect agricultural film in continuous cropping rice and dry seedling in 1991-1992.