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近年来我国杨树生产发展很快,可以说从粗放经营开始进入集约经营的新阶段。其标志是杨树丰产林基地建设已列入国家及地方的经济发展计划,到目前为止全国已造杨树丰产林200万亩以上,其中东北的牡丹江和辽河流域,山东临沂、聊城地区,山西雁北、晋南地区,江汉平原和洞庭湖区四大片杨树丰产林基地初具规模;从良种到栽培管理一套丰产技术,已逐步为广大群众所采用;速生丰产、集约
In recent years, China’s poplar production has developed rapidly, it can be said from the extensive operation into a new stage of intensive operation. Its symbol is Yangshufeng yield forest base construction has been included in the national and local economic development plan, so far the country has made more than 200 acres of poplar forest, of which the northeast of Mudanjiang and Liaohe River Basin, Shandong Linyi, Liaocheng, Shanxi In the areas of Yanbei, Jinnan, Jianghan Plain and Dongting Lake, the four major poplar-rich forest bases have begun to take shape. From seed production to cultivation and management, a set of high-yielding techniques has been gradually adopted by the broad masses of the people; fast growing and intensive production