论文部分内容阅读
为尽快解决牡丹江林区面临着“资源危机、经济危困”的局面,发展杨树速生丰产林是一条重要途径。近些年以来,杨树在华北、西北、东北以及华东部分省区发展很快,大面积的杨树速生丰产林正在形成和营造中。为了提高杨树丰产林的作业效率和质量,降低工人的体力劳动强度,我国西北防护林、辽宁、吉林、内蒙、黑龙江先后进行了杨树机械的研究。目前,牡丹江林区杨树丰产林经过几年的努力有较大的发展,建立
In order to solve the situation of “resource crisis and economic crisis” in Mudanjiang forest region as soon as possible, it is an important way to develop the fast growing and high yield poplar forest. In recent years, poplar has developed rapidly in North China, Northwest China, Northeast China and some eastern provinces and autonomous regions, and large-scale poplar fast-growing and high-yield forests are being formed and built. In order to improve the operational efficiency and quality of poplar high-yield forests and reduce the manual labor intensity of workers, Northwest Protection Forest in China, Liaoning, Jilin, Inner Mongolia, Heilongjiang have conducted poplar machinery. At present, Mudanjiang forest poplar rich forest after several years of efforts have greater development, the establishment