我们杨家山大队地处塞外,海拔1.100米,干旱少雨,无霜期120天左右.全大队2.066亩耕地,均是旱坡地.谷子是主要作物,占粮食播种面积的一半.解放前谷子亩产仅三、四十斤,公社化后特别是文化大革命以来,深入开展“农业学大寨”的群众运动.实行科学种田,建成水平梯田九百多亩.从1970年起谷子亩产连续五年上《纲要》,1976年800亩谷子亩产558斤,其中2.49亩,亩产达903.7斤.近两年来尽管遭到“四人帮”的干扰破坏,又遭遇干旱 Our Yangjiashan Brigade is located outside the Great Wall, at an altitude of 1,100 meters, with less rainfall and frost-free period of about 120 days. The entire brigade is 2.066 mu of arable land, all of which are dry land. The main crop is millet, accounting for half of the sown area of ​​grain. , Forty jin, after the commune, especially since the Cultural Revolution, carry out mass movement of “agriculture learning Dazhai.” The implementation of scientific farming, built horizontal terraced fields 900 acres.From 1970 since the mu yield for five consecutive years On the “Outline,” in 1976 800 mu of mu yield 558 catties, of which 2.49 mu, yielding 903.7 kg per mu in recent years despite the “gang of four,” the interference and destruction, but also suffered a drought