一些先进国家已广泛采用塑料薄膜地面复盖的技术措施,日本、美国、意大利等应用塑料薄膜进行地面复盖已有多年历史。复盖作物的种类很广。近年来复盖薄膜的品种不断增加,除了各种颜色的薄膜外,还有许多特殊薄膜,如带孔薄膜、网络薄膜、杀草薄膜等。各种薄膜的应用条件虽有差别,但复盖薄膜的作用都是用来改变近地面层的小气候条件和表层的土壤条件、盖膜后有保蓄土壤水分,提高地温、防止养分流失,稳定土壤结构,抑制杂草生长等作用,从而达到栽培上所要求的条件。反光薄膜(或叫反射膜)是加有铝粉的薄膜,其作用是使树下的光反射到树上,促进果实着色,提高成熟度,从而提高果品质量 Some advanced countries have extensively adopted the technical measures of plastic film covering the ground, Japan, the United States, Italy and other applications of plastic film covering the ground has been for many years. Cover a wide range of crops. In recent years, the coverage of film varieties continue to increase, in addition to a variety of colors of the film, there are many special films, such as perforated film, network film, kill grass film. Although the application conditions of various films are different, the function of the covering film is to change the microclimate conditions of the near ground surface and the soil conditions of the surface layer. After covering the film, soil moisture is saved to increase the ground temperature so as to prevent nutrient loss and stability Soil structure, inhibition of weed growth and other effects, so as to achieve the required conditions for cultivation. Reflective film (or called reflective film) is a film of aluminum powder, its role is to make the light reflected under the tree to the tree, promote fruit coloring, improve maturity, thereby enhancing the quality of fruit