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塑膜覆盖是一项新的增产措施。近年来,除广泛应用无色透明薄膜外,在国外又根据实际需要研制出了多种新型覆盖薄膜。 自然融解簿膜 在欧洲和日本已广泛应用一种自然融解薄膜。这种薄膜的主要材料是利用制造纸浆过程中排出废液中的纤维素,切碎后加入增量剂、增粮剂和防止蒸发剂,使其成为液体状,兑水稀释几倍后,喷洒在土壤表面,1～2小时后便干燥,成为覆盖薄膜。其控制蒸发效果可达90％,50～60天内仍保持70％。这种膜能为土壤土中的微生物分解,3～4个月后就自行融解掉。这样就无需人工去处理残膜,从而大大节省了劳力。这种膜用途广泛,今后有可能用来绿化沙漠等。
Plastic film coverage is a new stimulation. In recent years, in addition to the wide application of colorless and transparent film, in foreign countries and according to actual needs developed a variety of new cover film. Natural melt film has been widely used in Europe and Japan, a natural melt film. This film is the main material is the use of cellulose in the process of waste paper pulp production, chopped after adding extenders, grain increase agents and prevent evaporation, making it a liquid, dilute several times diluted with water In the soil surface, 1 to 2 hours after drying, a cover film. Its control of evaporation up to 90%, 50 ~ 60 days remain 70%. This film can soil microbial decomposition, after 3 to 4 months to melt themselves off. This eliminates the need to manually manipulate the residual film, thus saving a lot of labor. This film is widely used in the future may be used to green desert and so on.