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林业部于一九八○年五月在承德地区召开北方飞播造林种草经验交流会指出:我国还有大面积的宜林荒山、荒沙,有待造林绿化。特别是西北地区地广人稀,单靠人力和一般机械造林是难以按时完成任务的。应该利用飞机播种速度快、成本低、耗费人力少的特点,在有条件的地方,开展飞播造林种草。我区总土地面积十七亿七千万亩。其中沙漠、戈壁有四亿五千万亩,荒山面积三亿多亩,有许多荒山和沙漠,可以通过试验逐
In May 1980, the Ministry of Forestry convened a meeting on exchange of aerial seeding, planting and grass planting in northern China and pointed out: There are still a large area of afforested barren hills and irrigated areas in our country, awaiting afforestation. Especially in the sparsely populated areas in Northwest China, relying on manpower and general mechanical afforestation is difficult to accomplish the task on time. Should use the aircraft sowing speed, low cost, less labor-consuming features, where conditions permit, to carry out aerial sowing and planting grass. My area total area of 1.770 million mu of land. Among them, there are 450 million mu of desert and 450 million mu of desert in the desert. There are over 300 million mu of barren hills and there are many barren hills and deserts,