凌源市位于辽宁省的西南部,地处辽、冀、蒙三省交汇处,交通便利,年平均降水量460 mm,年平均气温8.3℃,≥10℃有效活动积温3 400℃,平均日照时数为2 804小时,无霜期145天,属于半湿润半干旱丘陵山区。这里光照充足,昼夜温差大,常年少雨,多晴天,独特的地理位置和气候条件,非常适宜设施农业的发展。20世纪80年代初期开始,凌源市从荷兰引进 Lingyuan City is located in the southwest of Liaoning Province, located in the intersection of Liaoning, Hebei and Mongolia provinces, convenient transportation, the annual average rainfall of 460 mm, the annual average temperature of 8.3 ℃, ≥ 10 ℃ effective active accumulated temperature of 3400 ℃, the average sunshine hours Number of 2 804 hours, frost-free period of 145 days, are semi-humid semi-arid hills and mountains. There is plenty of light, large temperature difference between day and night, perennial rain, sunny days, unique geographical location and climatic conditions, is very suitable for the development of facilities agriculture. Beginning of the 1980s, Lingyuan City was introduced from the Netherlands