【摘要】 本文主要从播区、树种、播期三个方面论述了陕西飞播造林的成就。对半干旱、半湿润、湿润三类地区飞播效果作了比较。对油松、华山松、马尾松、侧柏、漆树、踏郎、沙打旺等7个有代表性的飞播植物种的生物学特性和成苗规律进行了分析。按各地水热条件的不同,把播期划分为春、夏、秋三个季节。更多还原

【Abstract】 Deals with aerial sowing site, species and seeding time to approach the afforestation achievements in Shaanxi. The results of aerial sowing in three different regions (i. e. semi-arid, semi-humid and humid) were compared. Analysis was made on the biological characters and regularity of seedling percent for Pinus tabulae formis, P. armandi, P .massoniana, Platy-cladus orientalis, Rhus veiniciflua, Astragalus adsurgens and Hedysarum mougolicum.更多还原