集宁地处内蒙古高原、海拔1,400多米。风多雨少,十年九旱,无霜期短,昼夜温差大,每年适合蔬菜生长的时期只有100天左右。1972年我们搞了塑料大棚栽培黄瓜的试验,获初步成功。大棚黄瓜于5月29日开始采收,比露地黄瓜提早上市约45天,亩产22,500斤,比露地增产3—4倍。1973年塑料大棚增加到5个,其中4个棚栽培黄瓜,平均亩产26,061斤,有一个棚亩产达31,641斤,采收期比1972年提早12天。1974年大棚增加到9个,其中3个棚种黄瓜,总面积2.56亩,平均亩产30,286斤,产量最高的一个棚亩产达到 Jining is located in Inner Mongolia Plateau, 1,400 meters above sea level. Windy and rainy, drought ten years, frost-free period is short, large temperature difference between day and night, annual growth of vegetables for only about 100 days. In 1972, we engaged in plastic greenhouse cultivation of cucumber, preliminary success. Greenhouse cucumbers began to be harvested on May 29, reaching 45 days earlier than the open cucumbers, yielding 22,500 pounds, 3-4 times more than the open field. In 1973, the number of plastic greenhouses increased to 5, of which 4 were greenhouse cucumbers, with an average yield of 26,061 jin per mu and a shed of 31,641 jin per mu. The harvest period was 12 days earlier than that in 1972. In 1974, the number of greenhouses increased to 9, of which 3 were cucumbers with a total area of ​​2.56 mu and an average yield of 30,286 catties. The yield of one shed reached the highest level