房山飞播荒山造林成效显著为加快绿化造林步伐，房山区自１９８７年开始进行飞播造林。到１９９３年底，全区完成飞播造林１５９８９０亩，播区６９个，其中，飞机作业１６１架次，人工撒播作业区５６个。飞播造林地主要集中在史家营、霞云岭、佛子庄、张坊等８个乡、镇，... Fangshan sowing barren hills afforestation remarkable results In order to speed up the pace of afforestation afforestation, Fangshan District since the beginning of aerial seeding. By the end of 1993, the region had completed 159,890 acres of afforestation and afforestation with 69 sowing areas, of which 161 sorties were aircraft operations and 56 sowing operation areas were artificially sown. Aerial seeding land mainly in Shi Jiaying, Xia Yunling, Buddha Zhuang, Zhang Fang and other 8 townships, town, ...