论文部分内容阅读
河北省解放初期有宜林荒山8,800万亩,现在绿化了一半,如按每年造林200万亩计,尚需20年才能完成。为了加速绿化,在河北省林业局领导下,由中国林科院林科所,河北省林业研究所与承德、保定、石家庄、张家口四个地区及其有关县林业局等单位协作,于1974—1979年进行了飞播造林试验,总面积达240万亩,目前已可看到片状或块状的油松幼林,正在茁壮生长。现将飞播试验过程和结果介绍如下:
In the early days of the liberation of Hebei Province, there were 88 million mu of barren hillsides in Yilin County, and now it is half green. For instance, it will take 20 years to complete the plan of 200 million mu of afforestation each year. In order to speed up the greening, under the leadership of the Hebei Provincial Forestry Bureau, by the Chinese Academy of Forestry Linke, Forestry Research Institute of Hebei Province and Chengde, Baoding, Shijiazhuang, Zhangjiakou four districts and their associated County Forestry Bureau and other units, The aerial seeding afforestation experiment was conducted in 1979, covering a total area of 2.4 million mu. Now you can see flaky or massive Pinus tabulaeformis young stands that are thriving. Now the flight test process and the results are as follows: