在民航及有关部门的密切配合下,一九五八年以来,我省先后在陕北沙区、黄土区和陕南石质山区开展了飞播造林草种试验。截止一九七九年共飞播造林种草二百六十多万亩,其中陕南飞播造林一百三十六万亩,陕北飞播造林种草试验一百二十六万亩。实践证明,飞机播种是加快绿化步伐,改良草场的有效途径。 With close cooperation between civil aviation and relevant departments, since 1958, the province has conducted aerial seeding and seeding tests in the sandy areas of Shabei, Loess and in the rocky mountainous areas of southern Shaanxi. As of 1979, a total of over 2.6 million mu of afforestation grass has been sown, of which 1.36 million mu are afforestation in southern Shaanxi and 1.2 million mu are used for aerial sowing and planting in northern Shaanxi. Practice has proved that aircraft sowing is to speed up the pace of greening, an effective way to improve the pasture.