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杨树是昭盟造林绿化的主要树种,解放后昭盟杨树发展很快,现有林面积达597万亩,不但起到很大防护作用,而且开始生产木材,支援了社会主义建设。大力发展杨树丰产林,对进一步改变自然条件,争取在短期内实现木材自给,具有十分重要意义。一、发展杨树丰产林的有利条件第一,昭盟地处蒙古高原向东北平原的过渡地带,东部为松辽平原的一部分。全盟一亿二千六百多万亩土地,有近四分之一的平原,并且大部分为冲积沙壤、粉沙壤土。境内有四条较大河流,数十条小河流,这些河流沿岸有大量的一、二级阶地和沿河滩
Poplar is the main afforestation afforestation Zhao League, after the liberation of Zhaomeng poplar developed rapidly, the existing forest area of 597 mu, not only played a great protective role, and began to produce timber, supporting the construction of socialism. Vigorously develop poplar forests, to further change the natural conditions, strive to achieve timber self-sufficiency in the short term, is of great significance. First, the favorable conditions for the development of poplar forest First, Zhao Meng League is located in the transitional zone to the northeast plains, east of the Songliao plain. With a total area of more than 126 million mu, nearly a quarter of the plain belongs to the alluvial and silty loam soil. The territory has four larger rivers, dozens of small rivers, these rivers have a large number of first and second terrace and along the beach