辽宁省建平县沙海公社位于大凌河、老哈河上游,是个纯山区,气候干旱,全年降水量为450毫米左右,而且降水量的70%以上集中在六、七、八3个月中,土壤干旱瘠薄。沙海公社广大贫下中农响应伟大领袖毛主席“实行大地园林化”的号召,大搞植树造林。并遵照毛主席“研究任何过程,如果是存在着两个以上矛盾的复 Located in the upper reaches of the Daling River and Laobaha River, Jianping County’s Shahai Commune is a pure mountainous area with arid climate. The annual precipitation is about 450mm, and more than 70% of precipitation is concentrated in six, seven and eight In mid-month soil arid barren. The vast majority of poor and middle-level peasants in the Shahai commune responded to the call of Chairman Mao, the great leader of the earth, to promote afforestation. And follow Chairman Mao’s ”study of any process, if there is more than two contradictions