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近年来,各种颜色的农膜纷纷上市,由于不同颜色的农膜对光谱的吸收和反射规律不同,对农作物生长及杂草、病虫害、地温的影响也不一样。因此,对有色农膜要科学选用。 1.黑色膜。作用于杂草严重地块或用于高温季节栽培育苗,如美国提子或者多种蔬菜如黄瓜、番茄,选用黑色膜效果好。 2.蓝色膜。主要用于作物育秧,有利于培育壮秧;还可用于果苗、花生、草莓等作物覆盖栽培。 3.绿色膜。多用于草莓、菜豆、甜椒、番茄、瓜类等蔬菜和其他经济作物,可较好地防除杂草。 4.红色膜。实践证明,在红色农膜下栽培的作物秧苗生长旺盛;甜菜含糖量增加;胡萝卜长得大;韭菜叶宽肉厚,收获期提前,产量增高。 5.紫色膜。适用于冬春温室或塑料大棚的花果
In recent years, various colors of agricultural plastic film have been listed, as different colors of plastic film on the spectrum of absorption and reflection of different laws on crop growth and weeds, pests and diseases, the impact of ground temperature is not the same. Therefore, the colored plastic sheeting should be scientifically selected. Black film The role of weeds in the block or for the cultivation of high temperature season nursery, such as the United States raisins or a variety of vegetables such as cucumber, tomato, the choice of black film good effect. Blue film Mainly used for crop seedling, is conducive to nurturing strong seedling; can also be used for seedlings, peanuts, strawberries and other crops covered cultivation. 3 green film. More used in strawberries, beans, sweet peppers, tomatoes, melons and other vegetables and other cash crops, better control of weeds. 4 red film. Practice has proved that the crops grown under the red plastic sheeting seedlings vigorous growth; sugar beet content increased; carrots grow large; leek leaves wide and thick, early harvest, yield increased. 5. Purple film. Suitable for winter or winter greenhouse plastic flower fruit