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目前,农用地膜的种类较多,现将其分成三组,分别介绍其特点及使用情况。 一、无色透明地膜(目前用量最大) 1.高压膜。用高压低密度聚乙烯树酯制成。透光、增温、保湿性能好,厚度0.011—0.017毫米,亩用量8—10公斤。用于蔬菜、瓜类、棉花、花生等作物,增产效果显著。 2.高密度膜。用低压高密度聚乙烯树酯制成。表面光滑,但透光性、耐老化性能不如高压膜。厚
At present, the types of agricultural film are more divided into three groups, introducing their characteristics and usage respectively. First, colorless and transparent film (currently the largest amount) 1. High-pressure film. Made of high-pressure, low-density polyethylene resin. Transparent, warming, moisturizing performance, thickness 0.011-0.017 mm, the amount of 8-10 kg mu. For vegetables, melons, cotton, peanuts and other crops, yield significant results. 2. High-density film. Made of low-pressure, high-density polyethylene resin. Smooth surface, but the light transmission, anti-aging performance than high-pressure film. thick