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飞播造林种草是一种机械化的作业方法。实践证明,它具有速度快、效率高、省劳力等优点,是快速恢复植被,绿化荒山的有效途径。我国的飞机播种造林从1958年开始,首先在四川省西昌获得成功。二十年来,先后有22个省(区)开展了此项工作,飞播造林总面积达一亿六千多万亩,保存面积约六千三百五十万亩。飞播造林最早的四川、广西等省(区)已经成林,并开始受益。飞播造林种草又是一种粗放的造林种草方法,播种前不整地,播种后不复土,与其它造林种草方法相比,它具有更严格的季节要求。因此,选择适宜的播期,不仅关系到
Aspen forest planting grass is a mechanized method of operation. Practice has proved that it has the advantages of fast speed, high efficiency, labor-saving and other advantages, is an effective way to quickly restore vegetation, green barren hills. China’s aircraft planting and planting began in 1958, the first success in Xichang, Sichuan Province. In the past 20 years, 22 provinces (autonomous regions) successively conducted this work. The total area of aerial seeding and afforestation has reached more than 160 million mu and preserved area of 63.5 million mu. The earliest aerial sowing in Sichuan, Guangxi and other provinces (regions) have become forest, and began to benefit. The aerial seeding and afforestation of grass is a kind of extensive afforestation and grass planting method. Before sowing, the planting is not complete and it does not re-soil after sowing. Compared with other afforestation and grafting methods, it has stricter seasonal requirements. Therefore, choosing the appropriate sowing date is not only relevant