日光温室在陕北高寒山区，由于冬季-10℃气温持续时间长，冬春茬黄瓜易受冻害，夏秋季温度高，多暴雨、冰雹、大风天气，后期气温下降快，病虫危害严重，以致秋季延后生产一直未能成功，多年来～年一大茬，效益难以提高。1995～1997年在陕北安塞试验一年二收高效栽培模式，前茬 Solar greenhouse in the alpine mountainous area of ​​northern Shaanxi, due to the long winter -10 ℃ temperature, winter and spring cucumber susceptible to frost damage, high summer and autumn temperatures, heavy rain, hail, windy weather, rapid decline in temperature later, pests and serious harm, so that Postponed production in the fall has been unsuccessful, with a large crop of ~ years in a few years, making it difficult to raise the benefits. From 1995 to 1997, Ansai experiment in northern Shaanxi received two high-efficiency cultivation modes in the past year