长春市冬季漫长,春秋两季的鲜菜供应主要靠保护地生产,在长期的生产实践中,形成了一整套保护地生产经验。随着人民消费水平的日益提高,对寒冷季节鲜菜的需求量也随之增加,从而也促进了保护地设施的不断发展,近年来。不加温和少加温的日光温室又有了新的发展,1989年兴建了5万米~2,1990年扩大12万米~2,1991年计划发展20万米~2。一、目前生产上推广几种主要类型生产上应用的日光温室类型很多,大致可归为三类。1.矮墙长波日光温室 (即柳河式或感王式)此种类型日光温室在长春兴建面积较大,其优点是冬季和早春温光效应好,定植期可提前到2月中下旬。温室为砖木结构,造价低,每栋5000—6000元(按每栋 Changchun City, a long winter, spring and autumn fresh vegetables supply mainly rely on the production of protected areas, in the long-term production practice, formed a set of production experience in protected areas. With the increasing level of people’s consumption, the demand for fresh vegetables in the cold season also increases, thus promoting the continuous development of protected facilities in recent years. There is another new development in the greenhouse without warm and less heating. In 1989, it built 50,000 m 2, expanded 120,000 m 2 in 1990 and planned to develop 200,000 m 2 in 1991. First, at present, there are many types of solar greenhouse used in the promotion of production of several major types of production, which can be generally classified into three categories. 1. Low-wall long-wave sunlight greenhouse (ie, Liuhe-style or sense of Wang) This type of greenhouse construction in Changchun larger area, which has the advantage of warm winter and early spring light effect, planting period can be advanced to late February. Greenhouses for the brick and wood structure, low cost, each 5000-6000 yuan (by each